12899404264 has 32 divisors (see below), whose sum is σ = 24540248520. Its totient is φ = 6355501056.

The previous prime is 12899404213. The next prime is 12899404291. The reversal of 12899404264 is 46240499821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9829136164 + 3070268100 = 99142^2 + 55410^2 .

It is a super-2 number, since 2×12899404264² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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, 663774 + ... + 682930.

Almost surely, 2^12899404264 is an apocalyptic number.

It is an amenable number.

12899404264 is a deficient number, since it is larger than the sum of its proper divisors (11640844256).

12899404264 is a wasteful number, since it uses less digits than its factorization.

12899404264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389 (or 20385 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 12899404264 in words is "twelve billion, eight hundred ninety-nine million, four hundred four thousand, two hundred sixty-four".