51165504232 has 8 divisors (see below), whose sum is σ = 95935320450. Its totient is φ = 25582752112.

The previous prime is 51165504227. The next prime is 51165504233. The reversal of 51165504232 is 23240556115.

It can be written as a sum of positive squares in only one way, i.e., 29979537316 + 21185966916 = 173146^2 + 145554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51165504233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197844007 + ... + 3197844022.

Almost surely, 2^51165504232 is an apocalyptic number.

It is an amenable number.

51165504232 is a deficient number, since it is larger than the sum of its proper divisors (44769816218).

51165504232 is a wasteful number, since it uses less digits than its factorization.

51165504232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395688035 (or 6395688031 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 51165504232 in words is "fifty-one billion, one hundred sixty-five million, five hundred four thousand, two hundred thirty-two".