72816877052 has 6 divisors (see below), whose sum is σ = 127429534848. Its totient is φ = 36408438524.

The previous prime is 72816877043. The next prime is 72816877057. The reversal of 72816877052 is 25077861827.

It is a junction number, because it is equal to n+sod(n) for n = 72816876985 and 72816877003.

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 as a sum of consecutive naturals, namely, 9102109628 + ... + 9102109635.

It is an arithmetic number, because the mean of its divisors is an integer number (21238255808).

Almost surely, 2^72816877052 is an apocalyptic number.

It is an amenable number.

72816877052 is a deficient number, since it is larger than the sum of its proper divisors (54612657796).

72816877052 is a wasteful number, since it uses less digits than its factorization.

72816877052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18204219267 (or 18204219265 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 53.

The spelling of 72816877052 in words is "seventy-two billion, eight hundred sixteen million, eight hundred seventy-seven thousand, fifty-two".