72155117010196 has 18 divisors (see below), whose sum is σ = 138794243671370. Its totient is φ = 32797780458960.

The previous prime is 72155117010061. The next prime is 72155117010227. The reversal of 72155117010196 is 69101071155127.

It can be written as a sum of positive squares in only one way, i.e., 60871765745296 + 11283351264900 = 7802036^2 + 3359070^2 .

It is a super-2 number, since 2×72155117010196² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74540409651 + ... + 74540410618.

Almost surely, 2^{72155117010196} is an apocalyptic number.

It is an amenable number.

72155117010196 is a deficient number, since it is larger than the sum of its proper divisors (66639126661174).

72155117010196 is a wasteful number, since it uses less digits than its factorization.

72155117010196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149080820295 (or 149080820282 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 46.

The spelling of 72155117010196 in words is "seventy-two trillion, one hundred fifty-five billion, one hundred seventeen million, ten thousand, one hundred ninety-six".