51075945792506 has 4 divisors (see below), whose sum is σ = 76613918688762. Its totient is φ = 25537972896252.

The previous prime is 51075945792499. The next prime is 51075945792511. The reversal of 51075945792506 is 60529754957015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43006170452281 + 8069775340225 = 6557909^2 + 2840735^2 .

It is a super-2 number, since 2×51075945792506² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768986448125 + ... + 12768986448128.

Almost surely, 2^{51075945792506} is an apocalyptic number.

51075945792506 is a deficient number, since it is larger than the sum of its proper divisors (25537972896256).

51075945792506 is a wasteful number, since it uses less digits than its factorization.

51075945792506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25537972896255.

The product of its (nonzero) digits is 119070000, while the sum is 65.

The spelling of 51075945792506 in words is "fifty-one trillion, seventy-five billion, nine hundred forty-five million, seven hundred ninety-two thousand, five hundred six".