51607160660 has 72 divisors (see below), whose sum is σ = 120558660768. Its totient is φ = 18540068800.

The previous prime is 51607160659. The next prime is 51607160723. The reversal of 51607160660 is 6606170615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72395 + ... + 329325.

It is an arithmetic number, because the mean of its divisors is an integer number (1674425844).

Almost surely, 2^51607160660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51607160660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60279330384).

51607160660 is an abundant number, since it is smaller than the sum of its proper divisors (68951500108).

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

51607160660 is a wasteful number, since it uses less digits than its factorization.

51607160660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257045 (or 257032 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 51607160660 in words is "fifty-one billion, six hundred seven million, one hundred sixty thousand, six hundred sixty".