51457270664 has 16 divisors (see below), whose sum is σ = 96500587920. Its totient is φ = 25723780560.

The previous prime is 51457270663. The next prime is 51457270673. The reversal of 51457270664 is 46607275415.

It is not an unprimeable number, because it can be changed into a prime (51457270663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561602 + ... + 646769.

It is an arithmetic number, because the mean of its divisors is an integer number (6031286745).

Almost surely, 2^51457270664 is an apocalyptic number.

It is an amenable number.

51457270664 is a deficient number, since it is larger than the sum of its proper divisors (45043317256).

51457270664 is a wasteful number, since it uses less digits than its factorization.

51457270664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213700 (or 1213696 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 51457270664 in words is "fifty-one billion, four hundred fifty-seven million, two hundred seventy thousand, six hundred sixty-four".