15560665646660 has 12 divisors (see below), whose sum is σ = 32677397858028. Its totient is φ = 6224266258656.

The previous prime is 15560665646639. The next prime is 15560665646671. The reversal of 15560665646660 is 6664656606551.

It can be written as a sum of positive squares in 2 ways, for example, as 7656875615236 + 7903790031424 = 2767106^2 + 2811368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15560665646593 and 15560665646602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389016641147 + ... + 389016641186.

It is an arithmetic number, because the mean of its divisors is an integer number (2723116488169).

Almost surely, 2^{15560665646660} is an apocalyptic number.

15560665646660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15560665646660 is an abundant number, since it is smaller than the sum of its proper divisors (17116732211368).

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

15560665646660 is a wasteful number, since it uses less digits than its factorization.

15560665646660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778033282342 (or 778033282340 counting only the distinct ones).

The product of its (nonzero) digits is 139968000, while the sum is 62.

The spelling of 15560665646660 in words is "fifteen trillion, five hundred sixty billion, six hundred sixty-five million, six hundred forty-six thousand, six hundred sixty".