373664125421 has 2 divisors, whose sum is σ = 373664125422. Its totient is φ = 373664125420.

The previous prime is 373664125403. The next prime is 373664125547. The reversal of 373664125421 is 124521466373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245346855625 + 128317269796 = 495325^2 + 358214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-373664125421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373664121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186832062710 + 186832062711.

It is an arithmetic number, because the mean of its divisors is an integer number (186832062711).

Almost surely, 2^373664125421 is an apocalyptic number.

It is an amenable number.

373664125421 is a deficient number, since it is larger than the sum of its proper divisors (1).

373664125421 is an equidigital number, since it uses as much as digits as its factorization.

373664125421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The spelling of 373664125421 in words is "three hundred seventy-three billion, six hundred sixty-four million, one hundred twenty-five thousand, four hundred twenty-one".