15664060656 has 30 divisors (see below), whose sum is σ = 43837614600. Its totient is φ = 5221353504.

The previous prime is 15664060639. The next prime is 15664060673. The reversal of 15664060656 is 65606046651.

15664060656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15664060639) and next prime (15664060673).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 54388956 + ... + 54389243.

It is an arithmetic number, because the mean of its divisors is an integer number (1461253820).

Almost surely, 2^15664060656 is an apocalyptic number.

15664060656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15664060656 is an abundant number, since it is smaller than the sum of its proper divisors (28173553944).

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

15664060656 is a wasteful number, since it uses less digits than its factorization.

15664060656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108778213 (or 108778204 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 15664060656 in words is "fifteen billion, six hundred sixty-four million, sixty thousand, six hundred fifty-six".