51331488560 has 80 divisors (see below), whose sum is σ = 131484611232. Its totient is φ = 18481152000.

The previous prime is 51331488517. The next prime is 51331488581. The reversal of 51331488560 is 6588413315.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199889 + ... + 377648.

Almost surely, 2^51331488560 is an apocalyptic number.

It is an amenable number.

51331488560 is an abundant number, since it is smaller than the sum of its proper divisors (80153122672).

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

51331488560 is a wasteful number, since it uses less digits than its factorization.

51331488560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577662 (or 577656 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 51331488560 in words is "fifty-one billion, three hundred thirty-one million, four hundred eighty-eight thousand, five hundred sixty".