12596465661 has 16 divisors (see below), whose sum is σ = 18089246784. Its totient is φ = 7750808064.

The previous prime is 12596465653. The next prime is 12596465681. The reversal of 12596465661 is 16656469521.

It is not a de Polignac number, because 12596465661 - 2³ = 12596465653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12596465621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668410 + ... + 686996.

It is an arithmetic number, because the mean of its divisors is an integer number (1130577924).

Almost surely, 2^12596465661 is an apocalyptic number.

It is an amenable number.

12596465661 is a deficient number, since it is larger than the sum of its proper divisors (5492781123).

12596465661 is a wasteful number, since it uses less digits than its factorization.

12596465661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35980.

The product of its digits is 2332800, while the sum is 51.

The spelling of 12596465661 in words is "twelve billion, five hundred ninety-six million, four hundred sixty-five thousand, six hundred sixty-one".