72323656776 has 96 divisors (see below), whose sum is σ = 228621968640. Its totient is φ = 20224237824.

The previous prime is 72323656723. The next prime is 72323656777. The reversal of 72323656776 is 67765632327.

72323656776 is a `hidden beast` number, since 7 + 2 + 3 + 2 + 3 + 6 + 567 + 76 = 666.

It is a super-2 number, since 2×72323656776² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72323656777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1502901 + ... + 1550276.

It is an arithmetic number, because the mean of its divisors is an integer number (2381478840).

Almost surely, 2^72323656776 is an apocalyptic number.

It is an amenable number.

72323656776 is an abundant number, since it is smaller than the sum of its proper divisors (156298311864).

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

72323656776 is a wasteful number, since it uses less digits than its factorization.

72323656776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053243 (or 3053236 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 54.

The spelling of 72323656776 in words is "seventy-two billion, three hundred twenty-three million, six hundred fifty-six thousand, seven hundred seventy-six".