15660561160 has 64 divisors (see below), whose sum is σ = 37941436800. Its totient is φ = 5795798016.

The previous prime is 15660561131. The next prime is 15660561167. The reversal of 15660561160 is 6116506651.

It is a super-2 number, since 2×15660561160² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15660561167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155052 + ... + 235291.

It is an arithmetic number, because the mean of its divisors is an integer number (592834950).

Almost surely, 2^15660561160 is an apocalyptic number.

15660561160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15660561160 is an abundant number, since it is smaller than the sum of its proper divisors (22280875640).

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

15660561160 is a wasteful number, since it uses less digits than its factorization.

15660561160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390430 (or 390426 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 15660561160 in words is "fifteen billion, six hundred sixty million, five hundred sixty-one thousand, one hundred sixty".