51550051512 has 16 divisors (see below), whose sum is σ = 128875128840. Its totient is φ = 17183350496.

The previous prime is 51550051477. The next prime is 51550051523. The reversal of 51550051512 is 21515005515.

It is a super-2 number, since 2×51550051512² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51550051512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073959383 + ... + 1073959430.

Almost surely, 2^51550051512 is an apocalyptic number.

It is an amenable number.

51550051512 is an abundant number, since it is smaller than the sum of its proper divisors (77325077328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51550051512 is a wasteful number, since it uses less digits than its factorization.

51550051512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147918822 (or 2147918818 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 30.

The spelling of 51550051512 in words is "fifty-one billion, five hundred fifty million, fifty-one thousand, five hundred twelve".