15660561106 has 32 divisors (see below), whose sum is σ = 24047771328. Its totient is φ = 7646918400.

The previous prime is 15660561089. The next prime is 15660561127. The reversal of 15660561106 is 60116506651.

15660561106 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13126446 + ... + 13127638.

It is an arithmetic number, because the mean of its divisors is an integer number (751492854).

Almost surely, 2^15660561106 is an apocalyptic number.

15660561106 is a deficient number, since it is larger than the sum of its proper divisors (8387210222).

15660561106 is a wasteful number, since it uses less digits than its factorization.

15660561106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026.

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

The spelling of 15660561106 in words is "fifteen billion, six hundred sixty million, five hundred sixty-one thousand, one hundred six".