72887314591 has 16 divisors (see below), whose sum is σ = 89729091648. Its totient is φ = 57655180800.

The previous prime is 72887314543. The next prime is 72887314613. The reversal of 72887314591 is 19541378827.

It is not a de Polignac number, because 72887314591 - 2⁹ = 72887314079 is a prime.

It is a super-3 number, since 3×72887314591³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72887314891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291501 + ... + 480361.

It is an arithmetic number, because the mean of its divisors is an integer number (5608068228).

Almost surely, 2^72887314591 is an apocalyptic number.

72887314591 is a deficient number, since it is larger than the sum of its proper divisors (16841777057).

72887314591 is a wasteful number, since it uses less digits than its factorization.

72887314591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193122.

The product of its digits is 3386880, while the sum is 55.

The spelling of 72887314591 in words is "seventy-two billion, eight hundred eighty-seven million, three hundred fourteen thousand, five hundred ninety-one".