15566156066 has 16 divisors (see below), whose sum is σ = 23547331584. Its totient is φ = 7717119984.

The previous prime is 15566156059. The next prime is 15566156069. The reversal of 15566156066 is 66065166551.

15566156066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15566156066.

It is not an unprimeable number, because it can be changed into a prime (15566156069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 422501 + ... + 457863.

It is an arithmetic number, because the mean of its divisors is an integer number (1471708224).

Almost surely, 2^15566156066 is an apocalyptic number.

15566156066 is a deficient number, since it is larger than the sum of its proper divisors (7981175518).

15566156066 is a wasteful number, since it uses less digits than its factorization.

15566156066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37225.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 15566156066 in words is "fifteen billion, five hundred sixty-six million, one hundred fifty-six thousand, sixty-six".