85391869272 has 32 divisors (see below), whose sum is σ = 213487987200. Its totient is φ = 28462847904.

The previous prime is 85391869247. The next prime is 85391869289. The reversal of 85391869272 is 27296819358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764673 + ... + 869199.

It is an arithmetic number, because the mean of its divisors is an integer number (6671499600).

Almost surely, 2^85391869272 is an apocalyptic number.

It is an amenable number.

85391869272 is an abundant number, since it is smaller than the sum of its proper divisors (128096117928).

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

85391869272 is a wasteful number, since it uses less digits than its factorization.

85391869272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138575 (or 138571 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

It can be divided in two parts, 8539186 and 9272, that added together give a palindrome (8548458).

The spelling of 85391869272 in words is "eighty-five billion, three hundred ninety-one million, eight hundred sixty-nine thousand, two hundred seventy-two".