51130818106 has 4 divisors (see below), whose sum is σ = 76696227162. Its totient is φ = 25565409052.

The previous prime is 51130818083. The next prime is 51130818121. The reversal of 51130818106 is 60181803115.

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., 37614663025 + 13516155081 = 193945^2 + 116259^2 .

It is a super-2 number, since 2×51130818106² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12782704525 + ... + 12782704528.

Almost surely, 2^51130818106 is an apocalyptic number.

51130818106 is a deficient number, since it is larger than the sum of its proper divisors (25565409056).

51130818106 is a wasteful number, since it uses less digits than its factorization.

51130818106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25565409055.

The product of its (nonzero) digits is 5760, while the sum is 34.

The spelling of 51130818106 in words is "fifty-one billion, one hundred thirty million, eight hundred eighteen thousand, one hundred six".