15696080656 has 15 divisors (see below), whose sum is σ = 30412127253. Its totient is φ = 7847789760.

The previous prime is 15696080641. The next prime is 15696080657. The reversal of 15696080656 is 65608069651.

The square root of 15696080656 is 125284.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8559210256 + 7136870400 = 92516^2 + 84480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15696080657) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 485476 + ... + 516796.

Almost surely, 2^15696080656 is an apocalyptic number.

15696080656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15696080656 is the 125284-th square number.

It is an amenable number.

15696080656 is a deficient number, since it is larger than the sum of its proper divisors (14716046597).

15696080656 is an frugal number, since it uses more digits than its factorization.

15696080656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62650 (or 31323 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 15696080656 in words is "fifteen billion, six hundred ninety-six million, eighty thousand, six hundred fifty-six".