51000125108 has 6 divisors (see below), whose sum is σ = 89250218946. Its totient is φ = 25500062552.

The previous prime is 51000125093. The next prime is 51000125153. The reversal of 51000125108 is 80152100015.

It can be written as a sum of positive squares in only one way, i.e., 42229428004 + 8770697104 = 205498^2 + 93652^2 .

It is a super-2 number, since 2×51000125108² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375015635 + ... + 6375015642.

It is an arithmetic number, because the mean of its divisors is an integer number (14875036491).

Almost surely, 2^51000125108 is an apocalyptic number.

It is an amenable number.

51000125108 is a deficient number, since it is larger than the sum of its proper divisors (38250093838).

51000125108 is a wasteful number, since it uses less digits than its factorization.

51000125108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750031281 (or 12750031279 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

The spelling of 51000125108 in words is "fifty-one billion, one hundred twenty-five thousand, one hundred eight".