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20748153202385 = 572373353069909
BaseRepresentation
bin1001011011110110011100…
…10011010010011011010001
32201110111121110201000221212
410231323032103102123101
510204414204204434020
6112043323041425505
74241001402224360
oct455731623223321
981414543630855
1020748153202385
11667a273641364
1223b116a63b295
13b767089c6a2b
1451a3048b77d7
1525ea915d3cc5
hex12dece4d26d1

20748153202385 has 32 divisors (see below), whose sum is σ = 30098503687680. Its totient is φ = 13422305622528.

The previous prime is 20748153202369. The next prime is 20748153202391. The reversal of 20748153202385 is 58320235184702.

20748153202385 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 20748153202385 - 24 = 20748153202369 is a prime.

It is a super-2 number, since 2×207481532023852 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176476190 + ... + 176593719.

It is an arithmetic number, because the mean of its divisors is an integer number (940578240240).

Almost surely, 220748153202385 is an apocalyptic number.

It is an amenable number.

20748153202385 is a deficient number, since it is larger than the sum of its proper divisors (9350350485295).

20748153202385 is a wasteful number, since it uses less digits than its factorization.

20748153202385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353070017.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 20748153202385 in words is "twenty trillion, seven hundred forty-eight billion, one hundred fifty-three million, two hundred two thousand, three hundred eighty-five".

Divisors: 1 5 7 23 35 73 115 161 365 511 805 1679 2555 8395 11753 58765 353069909 1765349545 2471489363 8120607907 12357446815 25774103357 40603039535 56844255349 128870516785 180418723499 284221276745 592804377211 902093617495 2964021886055 4149630640477 20748153202385