51564142334 has 16 divisors (see below), whose sum is σ = 78261889200. Its totient is φ = 25478095104.

The previous prime is 51564142321. The next prime is 51564142379. The reversal of 51564142334 is 43324146515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229427 + ... + 394670.

It is an arithmetic number, because the mean of its divisors is an integer number (4891368075).

Almost surely, 2^51564142334 is an apocalyptic number.

51564142334 is a deficient number, since it is larger than the sum of its proper divisors (26697746866).

51564142334 is a wasteful number, since it uses less digits than its factorization.

51564142334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624587.

The product of its digits is 172800, while the sum is 38.

Adding to 51564142334 its reverse (43324146515), we get a palindrome (94888288849).

The spelling of 51564142334 in words is "fifty-one billion, five hundred sixty-four million, one hundred forty-two thousand, three hundred thirty-four".