421067615667 has 8 divisors (see below), whose sum is σ = 561428073360. Its totient is φ = 280709450880.

The previous prime is 421067615653. The next prime is 421067615677. The reversal of 421067615667 is 766516760124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421067615667 - 2²⁰ = 421066567091 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (421067615677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85434 + ... + 921647.

It is an arithmetic number, because the mean of its divisors is an integer number (70178509170).

Almost surely, 2^421067615667 is an apocalyptic number.

421067615667 is a deficient number, since it is larger than the sum of its proper divisors (140360457693).

421067615667 is a wasteful number, since it uses less digits than its factorization.

421067615667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146453.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 421067615667 in words is "four hundred twenty-one billion, sixty-seven million, six hundred fifteen thousand, six hundred sixty-seven".