72816877051 has 4 divisors (see below), whose sum is σ = 72840668704. Its totient is φ = 72793085400.

The previous prime is 72816877043. The next prime is 72816877057. The reversal of 72816877051 is 15077861827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72816877051 - 2³ = 72816877043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72816877051.

It is not an unprimeable number, because it can be changed into a prime (72816877057) 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, 11891235 + ... + 11897356.

It is an arithmetic number, because the mean of its divisors is an integer number (18210167176).

Almost surely, 2^72816877051 is an apocalyptic number.

72816877051 is a deficient number, since it is larger than the sum of its proper divisors (23791653).

72816877051 is a wasteful number, since it uses less digits than its factorization.

72816877051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23791652.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 72816877051 in words is "seventy-two billion, eight hundred sixteen million, eight hundred seventy-seven thousand, fifty-one".