421546568867 has 2 divisors, whose sum is σ = 421546568868. Its totient is φ = 421546568866.

The previous prime is 421546568831. The next prime is 421546568869. The reversal of 421546568867 is 768865645124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421546568867 - 2²⁴ = 421529791651 is a prime.

Together with 421546568869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421546568869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210773284433 + 210773284434.

It is an arithmetic number, because the mean of its divisors is an integer number (210773284434).

Almost surely, 2^421546568867 is an apocalyptic number.

421546568867 is a deficient number, since it is larger than the sum of its proper divisors (1).

421546568867 is an equidigital number, since it uses as much as digits as its factorization.

421546568867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77414400, while the sum is 62.

The spelling of 421546568867 in words is "four hundred twenty-one billion, five hundred forty-six million, five hundred sixty-eight thousand, eight hundred sixty-seven".