72715054881 has 16 divisors (see below), whose sum is σ = 110835744768. Its totient is φ = 41539515600.

The previous prime is 72715054879. The next prime is 72715054891. The reversal of 72715054881 is 18845051727.

It is not a de Polignac number, because 72715054881 - 2¹ = 72715054879 is a prime.

It is a super-2 number, since 2×72715054881² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72715054881.

It is not an unprimeable number, because it can be changed into a prime (72715054801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422625 + ... + 569246.

It is an arithmetic number, because the mean of its divisors is an integer number (6927234048).

Almost surely, 2^72715054881 is an apocalyptic number.

It is an amenable number.

72715054881 is a deficient number, since it is larger than the sum of its proper divisors (38120689887).

72715054881 is a wasteful number, since it uses less digits than its factorization.

72715054881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995372.

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 72715054881 in words is "seventy-two billion, seven hundred fifteen million, fifty-four thousand, eight hundred eighty-one".