51002415120 has 80 divisors (see below), whose sum is σ = 158168840832. Its totient is φ = 13595366400.

The previous prime is 51002415083. The next prime is 51002415151. The reversal of 51002415120 is 2151420015.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×51002415120² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599220 + ... + 679020.

Almost surely, 2^51002415120 is an apocalyptic number.

It is an amenable number.

51002415120 is an abundant number, since it is smaller than the sum of its proper divisors (107166425712).

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

51002415120 is a wasteful number, since it uses less digits than its factorization.

51002415120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82480 (or 82474 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 51002415120 its reverse (2151420015), we get a palindrome (53153835135).

The spelling of 51002415120 in words is "fifty-one billion, two million, four hundred fifteen thousand, one hundred twenty".