72998007887 has 12 divisors (see below), whose sum is σ = 84927033720. Its totient is φ = 62561627856.

The previous prime is 72998007877. The next prime is 72998007931. The reversal of 72998007887 is 78870089927.

It is a de Polignac number, because none of the positive numbers 2^k-72998007887 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72998007877) 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 11 ways as a sum of consecutive naturals, for example, 303068 + ... + 487694.

It is an arithmetic number, because the mean of its divisors is an integer number (7077252810).

Almost surely, 2^72998007887 is an apocalyptic number.

72998007887 is a deficient number, since it is larger than the sum of its proper divisors (11929025833).

72998007887 is a wasteful number, since it uses less digits than its factorization.

72998007887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192710 (or 192703 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 65.

The spelling of 72998007887 in words is "seventy-two billion, nine hundred ninety-eight million, seven thousand, eight hundred eighty-seven".