85979814012 has 24 divisors (see below), whose sum is σ = 222910629200. Its totient is φ = 28659937968.

The previous prime is 85979813929. The next prime is 85979814013. The reversal of 85979814012 is 21041897958.

It is a happy number.

85979814012 is a `hidden beast` number, since 8 + 597 + 9 + 8 + 1 + 40 + 1 + 2 = 666.

It is a super-2 number, since 2×85979814012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 85979814012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85979814013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398054587 + ... + 398054802.

Almost surely, 2^85979814012 is an apocalyptic number.

It is an amenable number.

85979814012 is an abundant number, since it is smaller than the sum of its proper divisors (136930815188).

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

85979814012 is a wasteful number, since it uses less digits than its factorization.

85979814012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796109402 (or 796109394 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 85979814012 in words is "eighty-five billion, nine hundred seventy-nine million, eight hundred fourteen thousand, twelve".