421328040767 has 2 divisors, whose sum is σ = 421328040768. Its totient is φ = 421328040766.

The previous prime is 421328040719. The next prime is 421328040769. The reversal of 421328040767 is 767040823124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421328040767 is a prime.

Together with 421328040769, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421328040769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210664020383 + 210664020384.

It is an arithmetic number, because the mean of its divisors is an integer number (210664020384).

Almost surely, 2^421328040767 is an apocalyptic number.

421328040767 is a deficient number, since it is larger than the sum of its proper divisors (1).

421328040767 is an equidigital number, since it uses as much as digits as its factorization.

421328040767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 421328040767 in words is "four hundred twenty-one billion, three hundred twenty-eight million, forty thousand, seven hundred sixty-seven".