12168904957 has 4 divisors (see below), whose sum is σ = 13275169056. Its totient is φ = 11062640860.

The previous prime is 12168904903. The next prime is 12168904973. The reversal of 12168904957 is 75940986121.

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 a cyclic number.

It is not a de Polignac number, because 12168904957 - 2⁷ = 12168904829 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 (12168904987) 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, 553132033 + ... + 553132054.

It is an arithmetic number, because the mean of its divisors is an integer number (3318792264).

Almost surely, 2^12168904957 is an apocalyptic number.

It is an amenable number.

12168904957 is a deficient number, since it is larger than the sum of its proper divisors (1106264099).

12168904957 is a wasteful number, since it uses less digits than its factorization.

12168904957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106264098.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12168904957 in words is "twelve billion, one hundred sixty-eight million, nine hundred four thousand, nine hundred fifty-seven".