12689500965 has 16 divisors (see below), whose sum is σ = 20399430336. Its totient is φ = 6735657600.

The previous prime is 12689500931. The next prime is 12689501009. The reversal of 12689500965 is 56900598621.

It is not a de Polignac number, because 12689500965 - 2⁸ = 12689500709 is a prime.

It is a super-3 number, since 3×12689500965³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001496 + ... + 2007825.

It is an arithmetic number, because the mean of its divisors is an integer number (1274964396).

Almost surely, 2^12689500965 is an apocalyptic number.

12689500965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12689500965 is a deficient number, since it is larger than the sum of its proper divisors (7709929371).

12689500965 is a wasteful number, since it uses less digits than its factorization.

12689500965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009540.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 12689500965 in words is "twelve billion, six hundred eighty-nine million, five hundred thousand, nine hundred sixty-five".