71897971475 has 24 divisors (see below), whose sum is σ = 97282648512. Its totient is φ = 52276368800.

The previous prime is 71897971451. The next prime is 71897971511. The reversal of 71897971475 is 57417979817.

It is not a de Polignac number, because 71897971475 - 2⁸ = 71897971219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1147304 + ... + 1208346.

It is an arithmetic number, because the mean of its divisors is an integer number (4053443688).

Almost surely, 2^71897971475 is an apocalyptic number.

71897971475 is a deficient number, since it is larger than the sum of its proper divisors (25384677037).

71897971475 is a wasteful number, since it uses less digits than its factorization.

71897971475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65347 (or 65342 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 65.

The spelling of 71897971475 in words is "seventy-one billion, eight hundred ninety-seven million, nine hundred seventy-one thousand, four hundred seventy-five".