51139614980 has 24 divisors (see below), whose sum is σ = 107410931712. Its totient is φ = 20452466912.

The previous prime is 51139614949. The next prime is 51139614991. The reversal of 51139614980 is 8941693115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85262 + ... + 330981.

It is an arithmetic number, because the mean of its divisors is an integer number (4475455488).

Almost surely, 2^51139614980 is an apocalyptic number.

It is an amenable number.

51139614980 is an abundant number, since it is smaller than the sum of its proper divisors (56271316732).

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

51139614980 is a wasteful number, since it uses less digits than its factorization.

51139614980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422395 (or 422393 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 51139614980 in words is "fifty-one billion, one hundred thirty-nine million, six hundred fourteen thousand, nine hundred eighty".