12960435621 has 16 divisors (see below), whose sum is σ = 19751978624. Its totient is φ = 7404934464.

The previous prime is 12960435619. The next prime is 12960435647. The reversal of 12960435621 is 12653406921.

It is not a de Polignac number, because 12960435621 - 2¹ = 12960435619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12960435621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12960435601) 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, 127695 + ... + 205491.

It is an arithmetic number, because the mean of its divisors is an integer number (1234498664).

Almost surely, 2^12960435621 is an apocalyptic number.

It is an amenable number.

12960435621 is a deficient number, since it is larger than the sum of its proper divisors (6791543003).

12960435621 is an equidigital number, since it uses as much as digits as its factorization.

12960435621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85740.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 12960435621 in words is "twelve billion, nine hundred sixty million, four hundred thirty-five thousand, six hundred twenty-one".