51432118634 has 8 divisors (see below), whose sum is σ = 83082653220. Its totient is φ = 23737900896.

The previous prime is 51432118601. The next prime is 51432118637. The reversal of 51432118634 is 43681123415.

It can be written as a sum of positive squares in 2 ways, for example, as 38034750625 + 13397368009 = 195025^2 + 115747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51432118637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989079179 + ... + 989079230.

Almost surely, 2^51432118634 is an apocalyptic number.

51432118634 is a deficient number, since it is larger than the sum of its proper divisors (31650534586).

51432118634 is a wasteful number, since it uses less digits than its factorization.

51432118634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978158424.

The product of its digits is 69120, while the sum is 38.

The spelling of 51432118634 in words is "fifty-one billion, four hundred thirty-two million, one hundred eighteen thousand, six hundred thirty-four".