85637812080 has 40 divisors (see below), whose sum is σ = 265477218192. Its totient is φ = 22836749824.

The previous prime is 85637812063. The next prime is 85637812097. The reversal of 85637812080 is 8021873658.

It is an interprime number because it is at equal distance from previous prime (85637812063) and next prime (85637812097).

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 178411869 + ... + 178412348.

Almost surely, 2^85637812080 is an apocalyptic number.

85637812080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85637812080 is an abundant number, since it is smaller than the sum of its proper divisors (179839406112).

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

85637812080 is a wasteful number, since it uses less digits than its factorization.

85637812080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356824233 (or 356824227 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 85637812080 in words is "eighty-five billion, six hundred thirty-seven million, eight hundred twelve thousand, eighty".