72715641547724 has 12 divisors (see below), whose sum is σ = 145431283095504. Its totient is φ = 31163846377584.

The previous prime is 72715641547699. The next prime is 72715641547729. The reversal of 72715641547724 is 42774514651727.

72715641547724 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (72715641547729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298493599039 + ... + 1298493599094.

It is an arithmetic number, because the mean of its divisors is an integer number (12119273591292).

Almost surely, 2^{72715641547724} is an apocalyptic number.

It is an amenable number.

72715641547724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72715641547724 is a wasteful number, since it uses less digits than its factorization.

72715641547724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596987198144 (or 2596987198142 counting only the distinct ones).

The product of its digits is 92198400, while the sum is 62.

The spelling of 72715641547724 in words is "seventy-two trillion, seven hundred fifteen billion, six hundred forty-one million, five hundred forty-seven thousand, seven hundred twenty-four".