32164446421391 has 2 divisors, whose sum is σ = 32164446421392. Its totient is φ = 32164446421390.

The previous prime is 32164446421291. The next prime is 32164446421403. The reversal of 32164446421391 is 19312464446123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32164446421391 - 2¹⁸ = 32164446159247 is a prime.

It is a super-2 number, since 2×32164446421391² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32164446421291) 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, 16082223210695 + 16082223210696.

It is an arithmetic number, because the mean of its divisors is an integer number (16082223210696).

Almost surely, 2^{32164446421391} is an apocalyptic number.

32164446421391 is a deficient number, since it is larger than the sum of its proper divisors (1).

32164446421391 is an equidigital number, since it uses as much as digits as its factorization.

32164446421391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 50.

The spelling of 32164446421391 in words is "thirty-two trillion, one hundred sixty-four billion, four hundred forty-six million, four hundred twenty-one thousand, three hundred ninety-one".