85642620132 has 12 divisors (see below), whose sum is σ = 199832780336. Its totient is φ = 28547540040.

The previous prime is 85642620127. The next prime is 85642620169. The reversal of 85642620132 is 23102624658.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3568442494 + ... + 3568442517.

Almost surely, 2^85642620132 is an apocalyptic number.

It is an amenable number.

85642620132 is an abundant number, since it is smaller than the sum of its proper divisors (114190160204).

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

85642620132 is a wasteful number, since it uses less digits than its factorization.

85642620132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136885018 (or 7136885016 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 85642620132 in words is "eighty-five billion, six hundred forty-two million, six hundred twenty thousand, one hundred thirty-two".