85989256504 has 64 divisors (see below), whose sum is σ = 172440576000. Its totient is φ = 40109784960.

The previous prime is 85989256501. The next prime is 85989256541. The reversal of 85989256504 is 40565298958.

It is a super-2 number, since 2×85989256504² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85989256501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4730457 + ... + 4748599.

It is an arithmetic number, because the mean of its divisors is an integer number (2694384000).

Almost surely, 2^85989256504 is an apocalyptic number.

It is an amenable number.

85989256504 is an abundant number, since it is smaller than the sum of its proper divisors (86451319496).

85989256504 is a wasteful number, since it uses less digits than its factorization.

85989256504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18868 (or 18864 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 85989256504 in words is "eighty-five billion, nine hundred eighty-nine million, two hundred fifty-six thousand, five hundred four".