71887198480 has 40 divisors (see below), whose sum is σ = 167167907712. Its totient is φ = 28749688704.

The previous prime is 71887198451. The next prime is 71887198507. The reversal of 71887198480 is 8489178817.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381207 + ... + 537673.

Almost surely, 2^71887198480 is an apocalyptic number.

It is an amenable number.

71887198480 is an abundant number, since it is smaller than the sum of its proper divisors (95280709232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71887198480 is a wasteful number, since it uses less digits than its factorization.

71887198480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162223 (or 162217 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 61.

The spelling of 71887198480 in words is "seventy-one billion, eight hundred eighty-seven million, one hundred ninety-eight thousand, four hundred eighty".