51667016872 has 16 divisors (see below), whose sum is σ = 96879182400. Its totient is φ = 25832568240.

The previous prime is 51667016867. The next prime is 51667016899. The reversal of 51667016872 is 27861076615.

It is a happy number.

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, 152529 + ... + 355807.

It is an arithmetic number, because the mean of its divisors is an integer number (6054948900).

Almost surely, 2^51667016872 is an apocalyptic number.

It is an amenable number.

51667016872 is a deficient number, since it is larger than the sum of its proper divisors (45212165528).

51667016872 is a wasteful number, since it uses less digits than its factorization.

51667016872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235056 (or 235052 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 51667016872 in words is "fifty-one billion, six hundred sixty-seven million, sixteen thousand, eight hundred seventy-two".