85320391992 has 64 divisors (see below), whose sum is σ = 232888867200. Its totient is φ = 25832787840.

The previous prime is 85320391991. The next prime is 85320392033. The reversal of 85320391992 is 29919302358.

It is a super-3 number, since 3×85320391992³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85320391991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177234 + ... + 449502.

It is an arithmetic number, because the mean of its divisors is an integer number (3638888550).

Almost surely, 2^85320391992 is an apocalyptic number.

It is an amenable number.

85320391992 is an abundant number, since it is smaller than the sum of its proper divisors (147568475208).

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

85320391992 is a wasteful number, since it uses less digits than its factorization.

85320391992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273476 (or 273472 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 85320391992 in words is "eighty-five billion, three hundred twenty million, three hundred ninety-one thousand, nine hundred ninety-two".