12903408961 has 4 divisors (see below), whose sum is σ = 12904586800. Its totient is φ = 12902231124.

The previous prime is 12903408919. The next prime is 12903408977. The reversal of 12903408961 is 16980430921.

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: 16980430921 = 1777 ⋅9555673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12903408961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12903408361) 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, 572331 + ... + 594448.

It is an arithmetic number, because the mean of its divisors is an integer number (3226146700).

Almost surely, 2^12903408961 is an apocalyptic number.

It is an amenable number.

12903408961 is a deficient number, since it is larger than the sum of its proper divisors (1177839).

12903408961 is a wasteful number, since it uses less digits than its factorization.

12903408961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177838.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 12903408961 in words is "twelve billion, nine hundred three million, four hundred eight thousand, nine hundred sixty-one".