15713646660 has 144 divisors (see below), whose sum is σ = 48568993200. Its totient is φ = 4111564800.

The previous prime is 15713646659. The next prime is 15713646701. The reversal of 15713646660 is 6664631751.

It can be written as a sum of positive squares in 8 ways, for example, as 2287326276 + 13426320384 = 47826^2 + 115872^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2050516 + ... + 2058164.

It is an arithmetic number, because the mean of its divisors is an integer number (337284675).

Almost surely, 2^15713646660 is an apocalyptic number.

15713646660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15713646660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24284496600).

15713646660 is an abundant number, since it is smaller than the sum of its proper divisors (32855346540).

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

15713646660 is a wasteful number, since it uses less digits than its factorization.

15713646660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878 (or 7873 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 15713646660 in words is "fifteen billion, seven hundred thirteen million, six hundred forty-six thousand, six hundred sixty".