72156995896 has 64 divisors (see below), whose sum is σ = 140670794880. Its totient is φ = 34673063040.

The previous prime is 72156995891. The next prime is 72156995903. The reversal of 72156995896 is 69859965127.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156995891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31828155 + ... + 31830421.

It is an arithmetic number, because the mean of its divisors is an integer number (2197981170).

Almost surely, 2^72156995896 is an apocalyptic number.

It is an amenable number.

72156995896 is a deficient number, since it is larger than the sum of its proper divisors (68513798984).

72156995896 is a wasteful number, since it uses less digits than its factorization.

72156995896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764 (or 3760 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 67.

The spelling of 72156995896 in words is "seventy-two billion, one hundred fifty-six million, nine hundred ninety-five thousand, eight hundred ninety-six".