72816877053 has 12 divisors (see below), whose sum is σ = 111366988668. Its totient is φ = 45689020800.

The previous prime is 72816877043. The next prime is 72816877057. The reversal of 72816877053 is 35077861827.

It can be written as a sum of positive squares in 2 ways, for example, as 43950187449 + 28866689604 = 209643^2 + 169902^2 .

It is not a de Polignac number, because 72816877053 - 2⁹ = 72816876541 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 237963498 + ... + 237963803.

It is an arithmetic number, because the mean of its divisors is an integer number (9280582389).

Almost surely, 2^72816877053 is an apocalyptic number.

It is an amenable number.

72816877053 is a deficient number, since it is larger than the sum of its proper divisors (38550111615).

72816877053 is a wasteful number, since it uses less digits than its factorization.

72816877053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475927324 (or 475927321 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 72816877053 in words is "seventy-two billion, eight hundred sixteen million, eight hundred seventy-seven thousand, fifty-three".