51851589180 has 48 divisors (see below), whose sum is σ = 145296262944. Its totient is φ = 13816441600.

The previous prime is 51851589131. The next prime is 51851589191. The reversal of 51851589180 is 8198515815.

It is a congruent number.

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, 254067 + ... + 410186.

It is an arithmetic number, because the mean of its divisors is an integer number (3027005478).

Almost surely, 2^51851589180 is an apocalyptic number.

It is an amenable number.

51851589180 is an abundant number, since it is smaller than the sum of its proper divisors (93444673764).

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

51851589180 is a wasteful number, since it uses less digits than its factorization.

51851589180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665566 (or 665564 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 51.

The spelling of 51851589180 in words is "fifty-one billion, eight hundred fifty-one million, five hundred eighty-nine thousand, one hundred eighty".