72909472190994 has 48 divisors (see below), whose sum is σ = 166143069990144. Its totient is φ = 23075426368800.

The previous prime is 72909472190983. The next prime is 72909472191029. The reversal of 72909472190994 is 49909127490927.

It is a super-2 number, since 2×72909472190994² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232632092 + ... + 1232691239.

It is an arithmetic number, because the mean of its divisors is an integer number (3461313958128).

Almost surely, 2^{72909472190994} is an apocalyptic number.

72909472190994 is an abundant number, since it is smaller than the sum of its proper divisors (93233597799150).

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

72909472190994 is a wasteful number, since it uses less digits than its factorization.

72909472190994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465323423 (or 2465323420 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 72.

The spelling of 72909472190994 in words is "seventy-two trillion, nine hundred nine billion, four hundred seventy-two million, one hundred ninety thousand, nine hundred ninety-four".