12959404849 has 4 divisors (see below), whose sum is σ = 12965851120. Its totient is φ = 12952958580.

The previous prime is 12959404847. The next prime is 12959404867. The reversal of 12959404849 is 94840495921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12959404849 - 2¹ = 12959404847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12959404849.

It is not an unprimeable number, because it can be changed into a prime (12959404847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220119 + ... + 3224140.

It is an arithmetic number, because the mean of its divisors is an integer number (3241462780).

Almost surely, 2^12959404849 is an apocalyptic number.

It is an amenable number.

12959404849 is a deficient number, since it is larger than the sum of its proper divisors (6446271).

12959404849 is an equidigital number, since it uses as much as digits as its factorization.

12959404849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446270.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 12959404849 in words is "twelve billion, nine hundred fifty-nine million, four hundred four thousand, eight hundred forty-nine".