71288697864 has 16 divisors (see below), whose sum is σ = 178221744720. Its totient is φ = 23762899280.

The previous prime is 71288697853. The next prime is 71288697877. The reversal of 71288697864 is 46879688217.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71288697795 and 71288697804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485181182 + ... + 1485181229.

It is an arithmetic number, because the mean of its divisors is an integer number (11138859045).

Almost surely, 2^71288697864 is an apocalyptic number.

It is an amenable number.

71288697864 is an abundant number, since it is smaller than the sum of its proper divisors (106933046856).

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

71288697864 is a wasteful number, since it uses less digits than its factorization.

71288697864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970362420 (or 2970362416 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 71288697864 in words is "seventy-one billion, two hundred eighty-eight million, six hundred ninety-seven thousand, eight hundred sixty-four".