51512282118 has 48 divisors (see below), whose sum is σ = 121792568976. Its totient is φ = 15605133120.

The previous prime is 51512282099. The next prime is 51512282137. The reversal of 51512282118 is 81128221515.

51512282118 is a `hidden beast` number, since 5 + 1 + 512 + 28 + 2 + 118 = 666.

It is an interprime number because it is at equal distance from previous prime (51512282099) and next prime (51512282137).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 659380 + ... + 733352.

It is an arithmetic number, because the mean of its divisors is an integer number (2537345187).

Almost surely, 2^51512282118 is an apocalyptic number.

51512282118 is an abundant number, since it is smaller than the sum of its proper divisors (70280286858).

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

51512282118 is a wasteful number, since it uses less digits than its factorization.

51512282118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77509 (or 77506 counting only the distinct ones).

The product of its digits is 12800, while the sum is 36.

The spelling of 51512282118 in words is "fifty-one billion, five hundred twelve million, two hundred eighty-two thousand, one hundred eighteen".