12966891954 has 16 divisors (see below), whose sum is σ = 25944454848. Its totient is φ = 4320518832.

The previous prime is 12966891929. The next prime is 12966891979. The reversal of 12966891954 is 45919866921.

It is an interprime number because it is at equal distance from previous prime (12966891929) and next prime (12966891979).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428782 + ... + 458025.

It is an arithmetic number, because the mean of its divisors is an integer number (1621528428).

Almost surely, 2^12966891954 is an apocalyptic number.

12966891954 is an abundant number, since it is smaller than the sum of its proper divisors (12977562894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12966891954 is a wasteful number, since it uses less digits than its factorization.

12966891954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889249.

The product of its digits is 8398080, while the sum is 60.

The spelling of 12966891954 in words is "twelve billion, nine hundred sixty-six million, eight hundred ninety-one thousand, nine hundred fifty-four".