72617513896 has 16 divisors (see below), whose sum is σ = 137229949440. Its totient is φ = 36022860720.

The previous prime is 72617513893. The next prime is 72617513911. The reversal of 72617513896 is 69831571627.

It is not an unprimeable number, because it can be changed into a prime (72617513893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35735950 + ... + 35737981.

It is an arithmetic number, because the mean of its divisors is an integer number (8576871840).

Almost surely, 2^72617513896 is an apocalyptic number.

It is an amenable number.

72617513896 is a deficient number, since it is larger than the sum of its proper divisors (64612435544).

72617513896 is a wasteful number, since it uses less digits than its factorization.

72617513896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71474064 (or 71474060 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The spelling of 72617513896 in words is "seventy-two billion, six hundred seventeen million, five hundred thirteen thousand, eight hundred ninety-six".