500505100660 has 24 divisors (see below), whose sum is σ = 1051113207816. Its totient is φ = 200192040960.

The previous prime is 500505100657. The next prime is 500505100679. The reversal of 500505100660 is 66001505005.

It can be written as a sum of positive squares in 4 ways, for example, as 1653886224 + 498851214436 = 40668^2 + 706294^2 .

It is a congruent number.

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, 207721 + ... + 1021840.

It is an arithmetic number, because the mean of its divisors is an integer number (43796383659).

Almost surely, 2^500505100660 is an apocalyptic number.

It is an amenable number.

500505100660 is an abundant number, since it is smaller than the sum of its proper divisors (550608107156).

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

500505100660 is a wasteful number, since it uses less digits than its factorization.

500505100660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249923 (or 1249921 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 500505100660 its reverse (66001505005), we get a palindrome (566506605665).

The spelling of 500505100660 in words is "five hundred billion, five hundred five million, one hundred thousand, six hundred sixty".