72950800731 has 16 divisors (see below), whose sum is σ = 99910477344. Its totient is φ = 47312861184.

The previous prime is 72950800729. The next prime is 72950800771. The reversal of 72950800731 is 13700805927.

It is not a de Polignac number, because 72950800731 - 2¹ = 72950800729 is a prime.

It is a super-2 number, since 2×72950800731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72950800771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832165 + ... + 915641.

It is an arithmetic number, because the mean of its divisors is an integer number (6244404834).

Almost surely, 2^72950800731 is an apocalyptic number.

72950800731 is a deficient number, since it is larger than the sum of its proper divisors (26959676613).

72950800731 is a wasteful number, since it uses less digits than its factorization.

72950800731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91390.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 72950800731 in words is "seventy-two billion, nine hundred fifty million, eight hundred thousand, seven hundred thirty-one".