12426672167921 has 16 divisors (see below), whose sum is σ = 14271056098560. Its totient is φ = 10701502091280.

The previous prime is 12426672167909. The next prime is 12426672167933. The reversal of 12426672167921 is 12976127662421.

It is an interprime number because it is at equal distance from previous prime (12426672167909) and next prime (12426672167933).

It is not a de Polignac number, because 12426672167921 - 2⁶ = 12426672167857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12426672107921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25190 + ... + 4985376.

It is an arithmetic number, because the mean of its divisors is an integer number (891941006160).

Almost surely, 2^{12426672167921} is an apocalyptic number.

12426672167921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12426672167921 is a deficient number, since it is larger than the sum of its proper divisors (1844383930639).

12426672167921 is a wasteful number, since it uses less digits than its factorization.

12426672167921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972204.

The product of its digits is 6096384, while the sum is 56.

The spelling of 12426672167921 in words is "twelve trillion, four hundred twenty-six billion, six hundred seventy-two million, one hundred sixty-seven thousand, nine hundred twenty-one".