12990365597 has 4 divisors (see below), whose sum is σ = 14171307936. Its totient is φ = 11809423260.

The previous prime is 12990365573. The next prime is 12990365599. The reversal of 12990365597 is 79556309921.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79556309921 = 11 ⋅7232391811.

It is a cyclic number.

It is not a de Polignac number, because 12990365597 - 2¹⁸ = 12990103453 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 (12990365599) 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, 590471153 + ... + 590471174.

It is an arithmetic number, because the mean of its divisors is an integer number (3542826984).

Almost surely, 2^12990365597 is an apocalyptic number.

It is an amenable number.

12990365597 is a deficient number, since it is larger than the sum of its proper divisors (1180942339).

12990365597 is a wasteful number, since it uses less digits than its factorization.

12990365597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180942338.

The product of its (nonzero) digits is 4592700, while the sum is 56.

The spelling of 12990365597 in words is "twelve billion, nine hundred ninety million, three hundred sixty-five thousand, five hundred ninety-seven".