6326372428921 has 2 divisors, whose sum is σ = 6326372428922. Its totient is φ = 6326372428920.

The previous prime is 6326372428813. The next prime is 6326372428967. The reversal of 6326372428921 is 1298242736236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6195718374400 + 130654054521 = 2489120^2 + 361461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6326372428921 is a prime.

It is not a weakly prime, because it can be changed into another prime (6326372428121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163186214460 + 3163186214461.

It is an arithmetic number, because the mean of its divisors is an integer number (3163186214461).

Almost surely, 2^{6326372428921} is an apocalyptic number.

It is an amenable number.

6326372428921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6326372428921 is an equidigital number, since it uses as much as digits as its factorization.

6326372428921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 55.

The spelling of 6326372428921 in words is "six trillion, three hundred twenty-six billion, three hundred seventy-two million, four hundred twenty-eight thousand, nine hundred twenty-one".