51029818188 has 24 divisors (see below), whose sum is σ = 119076399792. Its totient is φ = 17008964544.

The previous prime is 51029818183. The next prime is 51029818199. The reversal of 51029818188 is 88181892015.

It is a self number, because there is not a number n which added to its sum of digits gives 51029818188.

It is not an unprimeable number, because it can be changed into a prime (51029818183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114606 + ... + 339402.

It is an arithmetic number, because the mean of its divisors is an integer number (4961516658).

Almost surely, 2^51029818188 is an apocalyptic number.

It is an amenable number.

51029818188 is an abundant number, since it is smaller than the sum of its proper divisors (68046581604).

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

51029818188 is a wasteful number, since it uses less digits than its factorization.

51029818188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243721 (or 243719 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 51.

The spelling of 51029818188 in words is "fifty-one billion, twenty-nine million, eight hundred eighteen thousand, one hundred eighty-eight".