15680506965 has 8 divisors (see below), whose sum is σ = 25088811168. Its totient is φ = 8362937040.

The previous prime is 15680506931. The next prime is 15680506991. The reversal of 15680506965 is 56960508651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15680506965 - 2⁶ = 15680506901 is a prime.

It is a super-2 number, since 2×15680506965² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522683551 + ... + 522683580.

It is an arithmetic number, because the mean of its divisors is an integer number (3136101396).

Almost surely, 2^15680506965 is an apocalyptic number.

15680506965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15680506965 is a deficient number, since it is larger than the sum of its proper divisors (9408304203).

15680506965 is a wasteful number, since it uses less digits than its factorization.

15680506965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045367139.

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 15680506965 in words is "fifteen billion, six hundred eighty million, five hundred six thousand, nine hundred sixty-five".