72768672497665 has 64 divisors (see below), whose sum is σ = 92254047206400. Its totient is φ = 55025178163200.

The previous prime is 72768672497513. The next prime is 72768672497681. The reversal of 72768672497665 is 56679427686727.

It is not a de Polignac number, because 72768672497665 - 2¹³ = 72768672489473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1025005320 + ... + 1025076310.

It is an arithmetic number, because the mean of its divisors is an integer number (1441469487600).

Almost surely, 2^{72768672497665} is an apocalyptic number.

It is an amenable number.

72768672497665 is a deficient number, since it is larger than the sum of its proper divisors (19485374708735).

72768672497665 is a wasteful number, since it uses less digits than its factorization.

72768672497665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71818.

The product of its digits is 17923368960, while the sum is 82.

The spelling of 72768672497665 in words is "seventy-two trillion, seven hundred sixty-eight billion, six hundred seventy-two million, four hundred ninety-seven thousand, six hundred sixty-five".