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78298249966 = 2293736485671
BaseRepresentation
bin100100011101011110…
…0000111101011101110
321111002201222012210221
41020322330013223232
52240323322444331
655545243121554
75441206100146
oct1107274075356
9244081865727
1078298249966
113022a3590a2
1213211b132ba
1374ca6c4b31
143b0ab59926
152083dc1711
hex123af07aee

78298249966 has 16 divisors (see below), whose sum is σ = 124780998240. Its totient is φ = 36777555360.

The previous prime is 78298249921. The next prime is 78298249993. The reversal of 78298249966 is 66994289287.

It is a super-2 number, since 2×782982499662 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78298249895 and 78298249904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240690 + ... + 18244981.

It is an arithmetic number, because the mean of its divisors is an integer number (7798812390).

Almost surely, 278298249966 is an apocalyptic number.

78298249966 is a deficient number, since it is larger than the sum of its proper divisors (46482748274).

78298249966 is a wasteful number, since it uses less digits than its factorization.

78298249966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36485739.

The product of its digits is 188116992, while the sum is 70.

The spelling of 78298249966 in words is "seventy-eight billion, two hundred ninety-eight million, two hundred forty-nine thousand, nine hundred sixty-six".

Divisors: 1 2 29 37 58 74 1073 2146 36485671 72971342 1058084459 1349969827 2116168918 2699939654 39149124983 78298249966