501655605160 has 16 divisors (see below), whose sum is σ = 1128725111700. Its totient is φ = 200662242048.

The previous prime is 501655605127. The next prime is 501655605169. The reversal of 501655605160 is 61506556105.

It can be written as a sum of positive squares in 2 ways, for example, as 450544343076 + 51111262084 = 671226^2 + 226078^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 12541390129 = 501655605160 / (5 + 0 + 1 + 6 + 5 + 5 + 6 + 0 + 5 + 1 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (501655605169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6270695025 + ... + 6270695104.

Almost surely, 2^501655605160 is an apocalyptic number.

It is an amenable number.

501655605160 is an abundant number, since it is smaller than the sum of its proper divisors (627069506540).

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

501655605160 is a wasteful number, since it uses less digits than its factorization.

501655605160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12541390140 (or 12541390136 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 501655605160 in words is "five hundred one billion, six hundred fifty-five million, six hundred five thousand, one hundred sixty".