421639362167 has 2 divisors, whose sum is σ = 421639362168. Its totient is φ = 421639362166.

The previous prime is 421639362143. The next prime is 421639362269. The reversal of 421639362167 is 761263936124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421639362167 - 2⁶ = 421639362103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421639362127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210819681083 + 210819681084.

It is an arithmetic number, because the mean of its divisors is an integer number (210819681084).

Almost surely, 2^421639362167 is an apocalyptic number.

421639362167 is a deficient number, since it is larger than the sum of its proper divisors (1).

421639362167 is an equidigital number, since it uses as much as digits as its factorization.

421639362167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 50.

The spelling of 421639362167 in words is "four hundred twenty-one billion, six hundred thirty-nine million, three hundred sixty-two thousand, one hundred sixty-seven".