85907238186 has 64 divisors (see below), whose sum is σ = 217144728576. Its totient is φ = 22007894400.

The previous prime is 85907238149. The next prime is 85907238187. The reversal of 85907238186 is 68183270958.

It is a happy number.

It is a super-2 number, since 2×85907238186² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85907238187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1239880 + ... + 1307331.

It is an arithmetic number, because the mean of its divisors is an integer number (3392886384).

Almost surely, 2^85907238186 is an apocalyptic number.

85907238186 is an abundant number, since it is smaller than the sum of its proper divisors (131237490390).

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

85907238186 is a wasteful number, since it uses less digits than its factorization.

85907238186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547307.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 85907238186 in words is "eighty-five billion, nine hundred seven million, two hundred thirty-eight thousand, one hundred eighty-six".