85651492320 has 144 divisors (see below), whose sum is σ = 307669274640. Its totient is φ = 21638264832.

The previous prime is 85651492271. The next prime is 85651492327. The reversal of 85651492320 is 2329415658.

85651492320 is a `hidden beast` number, since 8 + 565 + 1 + 49 + 23 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85651492327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1537909 + ... + 1592628.

It is an arithmetic number, because the mean of its divisors is an integer number (2136592185).

Almost surely, 2^85651492320 is an apocalyptic number.

85651492320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85651492320 is an abundant number, since it is smaller than the sum of its proper divisors (222017782320).

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

85651492320 is a wasteful number, since it uses less digits than its factorization.

85651492320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130577 (or 3130566 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 85651492320 in words is "eighty-five billion, six hundred fifty-one million, four hundred ninety-two thousand, three hundred twenty".