85642618732 has 48 divisors (see below), whose sum is σ = 164033372160. Its totient is φ = 38801548800.

The previous prime is 85642618729. The next prime is 85642618847. The reversal of 85642618732 is 23781624658.

It is a self number, because there is not a number n which added to its sum of digits gives 85642618732.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38249269 + ... + 38251507.

It is an arithmetic number, because the mean of its divisors is an integer number (3417361920).

Almost surely, 2^85642618732 is an apocalyptic number.

It is an amenable number.

85642618732 is a deficient number, since it is larger than the sum of its proper divisors (78390753428).

85642618732 is a wasteful number, since it uses less digits than its factorization.

85642618732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4700 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 85642618732 in words is "eighty-five billion, six hundred forty-two million, six hundred eighteen thousand, seven hundred thirty-two".