85663423728 has 120 divisors (see below), whose sum is σ = 240809587200. Its totient is φ = 28427236992.

The previous prime is 85663423723. The next prime is 85663423763. The reversal of 85663423728 is 82732436658.

85663423728 is a `hidden beast` number, since 8 + 566 + 3 + 4 + 2 + 3 + 72 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663423723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36622783 + ... + 36625121.

It is an arithmetic number, because the mean of its divisors is an integer number (2006746560).

Almost surely, 2^85663423728 is an apocalyptic number.

It is an amenable number.

85663423728 is an abundant number, since it is smaller than the sum of its proper divisors (155146163472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85663423728 is a wasteful number, since it uses less digits than its factorization.

85663423728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379 (or 3370 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 85663423728 in words is "eighty-five billion, six hundred sixty-three million, four hundred twenty-three thousand, seven hundred twenty-eight".