15566648607 has 20 divisors (see below), whose sum is σ = 24264923760. Its totient is φ = 9926557344.

The previous prime is 15566648597. The next prime is 15566648609. The reversal of 15566648607 is 70684666551.

It is not a de Polignac number, because 15566648607 - 2²³ = 15558259999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15566648609) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4175982 + ... + 4179707.

It is an arithmetic number, because the mean of its divisors is an integer number (1213246188).

Almost surely, 2^15566648607 is an apocalyptic number.

15566648607 is a deficient number, since it is larger than the sum of its proper divisors (8698275153).

15566648607 is an equidigital number, since it uses as much as digits as its factorization.

15566648607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355724 (or 8355715 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 15566648607 in words is "fifteen billion, five hundred sixty-six million, six hundred forty-eight thousand, six hundred seven".