85907973212 has 24 divisors (see below), whose sum is σ = 150525095280. Its totient is φ = 42900842880.

The previous prime is 85907973211. The next prime is 85907973253. The reversal of 85907973212 is 21237970958.

It is a happy number.

It is a super-2 number, since 2×85907973212² (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 (85907973211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13815128 + ... + 13821344.

It is an arithmetic number, because the mean of its divisors is an integer number (6271878970).

Almost surely, 2^85907973212 is an apocalyptic number.

It is an amenable number.

85907973212 is a deficient number, since it is larger than the sum of its proper divisors (64617122068).

85907973212 is a wasteful number, since it uses less digits than its factorization.

85907973212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941 (or 9939 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 85907973212 in words is "eighty-five billion, nine hundred seven million, nine hundred seventy-three thousand, two hundred twelve".