72195696968 has 32 divisors (see below), whose sum is σ = 148272103800. Its totient is φ = 32802911232.

The previous prime is 72195696929. The next prime is 72195696983. The reversal of 72195696968 is 86969659127.

It can be written as a sum of positive squares in 4 ways, for example, as 63636116644 + 8559580324 = 252262^2 + 92518^2 .

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a junction number, because it is equal to n+sod(n) for n = 72195696898 and 72195696907.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9148655 + ... + 9156542.

Almost surely, 2^72195696968 is an apocalyptic number.

It is an amenable number.

72195696968 is an abundant number, since it is smaller than the sum of its proper divisors (76076406832).

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

72195696968 is a wasteful number, since it uses less digits than its factorization.

72195696968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305249 (or 18305245 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 68.

The spelling of 72195696968 in words is "seventy-two billion, one hundred ninety-five million, six hundred ninety-six thousand, nine hundred sixty-eight".