12890405793 has 4 divisors (see below), whose sum is σ = 17187207728. Its totient is φ = 8593603860.

The previous prime is 12890405713. The next prime is 12890405861. The reversal of 12890405793 is 39750409821.

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 not a de Polignac number, because 12890405793 - 2²² = 12886211489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12890405713) 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, 2148400963 + ... + 2148400968.

It is an arithmetic number, because the mean of its divisors is an integer number (4296801932).

Almost surely, 2^12890405793 is an apocalyptic number.

It is an amenable number.

12890405793 is a deficient number, since it is larger than the sum of its proper divisors (4296801935).

12890405793 is an equidigital number, since it uses as much as digits as its factorization.

12890405793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296801934.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 12890405793 in words is "twelve billion, eight hundred ninety million, four hundred five thousand, seven hundred ninety-three".