51452637264 has 120 divisors (see below), whose sum is σ = 170661924160. Its totient is φ = 14700745728.

The previous prime is 51452637251. The next prime is 51452637307. The reversal of 51452637264 is 46273625415.

51452637264 is a `hidden beast` number, since 5 + 1 + 4 + 5 + 2 + 637 + 2 + 6 + 4 = 666.

51452637264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51452637264² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 918049 + ... + 972480.

Almost surely, 2^51452637264 is an apocalyptic number.

51452637264 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51452637264 is an abundant number, since it is smaller than the sum of its proper divisors (119209286896).

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

51452637264 is a wasteful number, since it uses less digits than its factorization.

51452637264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890559 (or 1890541 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 51452637264 in words is "fifty-one billion, four hundred fifty-two million, six hundred thirty-seven thousand, two hundred sixty-four".