72998691736 has 32 divisors (see below), whose sum is σ = 140364050400. Its totient is φ = 35570223360.

The previous prime is 72998691697. The next prime is 72998691737. The reversal of 72998691736 is 63719689927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72998691737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180346 + ... + 422518.

It is an arithmetic number, because the mean of its divisors is an integer number (4386376575).

Almost surely, 2^72998691736 is an apocalyptic number.

It is an amenable number.

72998691736 is a deficient number, since it is larger than the sum of its proper divisors (67365358664).

72998691736 is a wasteful number, since it uses less digits than its factorization.

72998691736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243139 (or 243135 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 67.

The spelling of 72998691736 in words is "seventy-two billion, nine hundred ninety-eight million, six hundred ninety-one thousand, seven hundred thirty-six".