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613125083385 = 325731091712329
BaseRepresentation
bin10001110110000010001…
…10100101000011111001
32011121120202000101002200
420323001012211003321
540021140010132020
61145355450220413
762203545135153
oct10730106450371
92147522011080
10613125083385
11217030141a51
129a9b2424709
1345a81c15b39
142196548dad3
1510e3727b590
hex8ec11a50f9

613125083385 has 48 divisors (see below), whose sum is σ = 1087192563600. Its totient is φ = 319561500672.

The previous prime is 613125083327. The next prime is 613125083387. The reversal of 613125083385 is 583380521316.

613125083385 is a `hidden beast` number, since 6 + 1 + 31 + 2 + 508 + 33 + 85 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3196944 + 613121886441 = 1788^2 + 783021^2 .

It is not a de Polignac number, because 613125083385 - 215 = 613125050617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 613125083385.

It is not an unprimeable number, because it can be changed into a prime (613125083387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 498100 + ... + 1214229.

It is an arithmetic number, because the mean of its divisors is an integer number (22649845075).

Almost surely, 2613125083385 is an apocalyptic number.

It is an amenable number.

613125083385 is a deficient number, since it is larger than the sum of its proper divisors (474067480215).

613125083385 is a wasteful number, since it uses less digits than its factorization.

613125083385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712522 (or 1712519 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 613125083385 in words is "six hundred thirteen billion, one hundred twenty-five million, eighty-three thousand, three hundred eighty-five".

Divisors: 1 3 5 9 15 45 73 109 219 327 365 545 657 981 1095 1635 3285 4905 7957 23871 39785 71613 119355 358065 1712329 5136987 8561645 15410961 25684935 77054805 125000017 186643861 375000051 559931583 625000085 933219305 1125000153 1679794749 1875000255 2799657915 5625000765 8398973745 13625001853 40875005559 68125009265 122625016677 204375027795 613125083385