71616298016 has 24 divisors (see below), whose sum is σ = 144433481724. Its totient is φ = 34934778880.

The previous prime is 71616298009. The next prime is 71616298049. The reversal of 71616298016 is 61089261617.

It can be written as a sum of positive squares in 2 ways, for example, as 47174102416 + 24442195600 = 217196^2 + 156340^2 .

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, 27291485 + ... + 27294108.

Almost surely, 2^71616298016 is an apocalyptic number.

It is an amenable number.

71616298016 is an abundant number, since it is smaller than the sum of its proper divisors (72817183708).

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

71616298016 is a wasteful number, since it uses less digits than its factorization.

71616298016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54585644 (or 54585636 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 71616298016 in words is "seventy-one billion, six hundred sixteen million, two hundred ninety-eight thousand, sixteen".