51252502218 has 8 divisors (see below), whose sum is σ = 102505004448. Its totient is φ = 17084167404.

The previous prime is 51252502211. The next prime is 51252502219. The reversal of 51252502218 is 81220525215.

It is a sphenic number, since it is the product of 3 distinct primes.

51252502218 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51252502211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4271041846 + ... + 4271041857.

It is an arithmetic number, because the mean of its divisors is an integer number (12813125556).

Almost surely, 2^51252502218 is an apocalyptic number.

51252502218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51252502218 is a wasteful number, since it uses less digits than its factorization.

51252502218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542083708.

The product of its (nonzero) digits is 16000, while the sum is 33.

The spelling of 51252502218 in words is "fifty-one billion, two hundred fifty-two million, five hundred two thousand, two hundred eighteen".