421825916767 has 2 divisors, whose sum is σ = 421825916768. Its totient is φ = 421825916766.

The previous prime is 421825916737. The next prime is 421825916777. The reversal of 421825916767 is 767619528124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421825916767 - 2²³ = 421817528159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421825916737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210912958383 + 210912958384.

It is an arithmetic number, because the mean of its divisors is an integer number (210912958384).

Almost surely, 2^421825916767 is an apocalyptic number.

421825916767 is a deficient number, since it is larger than the sum of its proper divisors (1).

421825916767 is an equidigital number, since it uses as much as digits as its factorization.

421825916767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The spelling of 421825916767 in words is "four hundred twenty-one billion, eight hundred twenty-five million, nine hundred sixteen thousand, seven hundred sixty-seven".