51534733764 has 12 divisors (see below), whose sum is σ = 120247712144. Its totient is φ = 17178244584.

The previous prime is 51534733753. The next prime is 51534733769. The reversal of 51534733764 is 46733743515.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51534733769) 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, 2147280562 + ... + 2147280585.

Almost surely, 2^51534733764 is an apocalyptic number.

It is an amenable number.

51534733764 is an abundant number, since it is smaller than the sum of its proper divisors (68712978380).

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

51534733764 is a wasteful number, since it uses less digits than its factorization.

51534733764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294561154 (or 4294561152 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 48.

The spelling of 51534733764 in words is "fifty-one billion, five hundred thirty-four million, seven hundred thirty-three thousand, seven hundred sixty-four".