15696832369 has 3 divisors (see below), whose sum is σ = 15696957657. Its totient is φ = 15696707082.

The previous prime is 15696832339. The next prime is 15696832421. The reversal of 15696832369 is 96323869651.

The square root of 15696832369 is 125287.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96323869651 = 859 ⋅112134889.

It is not a de Polignac number, because 15696832369 - 2⁵ = 15696832337 is a prime.

It is a super-2 number, since 2×15696832369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15696832339) 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, 62644 + ... + 187930.

It is an arithmetic number, because the mean of its divisors is an integer number (5232319219).

Almost surely, 2^15696832369 is an apocalyptic number.

15696832369 is the 125287-th square number.

15696832369 is the 62644-th centered octagonal number.

It is an amenable number.

15696832369 is a deficient number, since it is larger than the sum of its proper divisors (125288).

15696832369 is an frugal number, since it uses more digits than its factorization.

15696832369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250574 (or 125287 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 58.

The spelling of 15696832369 in words is "fifteen billion, six hundred ninety-six million, eight hundred thirty-two thousand, three hundred sixty-nine".