506556506660 has 24 divisors (see below), whose sum is σ = 1063811500920. Its totient is φ = 202614443264.

The previous prime is 506556506629. The next prime is 506556506699. The reversal of 506556506660 is 66605655605.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88371831076 + 418184675584 = 297274^2 + 646672^2 .

It is a junction number, because it is equal to n+sod(n) for n = 506556506599 and 506556506608.

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, 12152 + ... + 1006608.

It is an arithmetic number, because the mean of its divisors is an integer number (44325479205).

Almost surely, 2^506556506660 is an apocalyptic number.

It is an amenable number.

506556506660 is an abundant number, since it is smaller than the sum of its proper divisors (557254994260).

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

506556506660 is a wasteful number, since it uses less digits than its factorization.

506556506660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019935 (or 1019933 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 50.

The spelling of 506556506660 in words is "five hundred six billion, five hundred fifty-six million, five hundred six thousand, six hundred sixty".