51381573232634 has 16 divisors (see below), whose sum is σ = 77292270587400. Its totient is φ = 25617506713920.

The previous prime is 51381573232567. The next prime is 51381573232637. The reversal of 51381573232634 is 43623237518315.

It can be written as a sum of positive squares in 4 ways, for example, as 49788053284225 + 1593519948409 = 7056065^2 + 1262347^2 .

It is not an unprimeable number, because it can be changed into a prime (51381573232637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573709 + ... + 10258640.

Almost surely, 2^{51381573232634} is an apocalyptic number.

51381573232634 is a deficient number, since it is larger than the sum of its proper divisors (25910697354766).

51381573232634 is a wasteful number, since it uses less digits than its factorization.

51381573232634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838545.

The product of its digits is 10886400, while the sum is 53.

The spelling of 51381573232634 in words is "fifty-one trillion, three hundred eighty-one billion, five hundred seventy-three million, two hundred thirty-two thousand, six hundred thirty-four".