421338383215 has 4 divisors (see below), whose sum is σ = 505606059864. Its totient is φ = 337070706568.

The previous prime is 421338383177. The next prime is 421338383233. The reversal of 421338383215 is 512383833124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421338383215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42133838317 + ... + 42133838326.

It is an arithmetic number, because the mean of its divisors is an integer number (126401514966).

Almost surely, 2^421338383215 is an apocalyptic number.

421338383215 is a deficient number, since it is larger than the sum of its proper divisors (84267676649).

421338383215 is an equidigital number, since it uses as much as digits as its factorization.

421338383215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84267676648.

The product of its digits is 414720, while the sum is 43.

The spelling of 421338383215 in words is "four hundred twenty-one billion, three hundred thirty-eight million, three hundred eighty-three thousand, two hundred fifteen".