12896993533 has 4 divisors (see below), whose sum is σ = 12897437500. Its totient is φ = 12896549568.

The previous prime is 12896993453. The next prime is 12896993561. The reversal of 12896993533 is 33539969821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33539969821 = 337 ⋅99525133.

It can be written as a sum of positive squares in 2 ways, for example, as 8603861049 + 4293132484 = 92757^2 + 65522^2 .

It is a cyclic number.

It is not a de Polignac number, because 12896993533 - 2²⁵ = 12863439101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12896993563) 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, 175110 + ... + 237607.

It is an arithmetic number, because the mean of its divisors is an integer number (3224359375).

Almost surely, 2^12896993533 is an apocalyptic number.

It is an amenable number.

12896993533 is a deficient number, since it is larger than the sum of its proper divisors (443967).

12896993533 is an equidigital number, since it uses as much as digits as its factorization.

12896993533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443966.

The product of its digits is 9447840, while the sum is 58.

The spelling of 12896993533 in words is "twelve billion, eight hundred ninety-six million, nine hundred ninety-three thousand, five hundred thirty-three".