421807870785 has 64 divisors (see below), whose sum is σ = 776705587200. Its totient is φ = 191480647680.

The previous prime is 421807870753. The next prime is 421807870801. The reversal of 421807870785 is 587078708124.

It is not a de Polignac number, because 421807870785 - 2⁵ = 421807870753 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9926394 + ... + 9968796.

It is an arithmetic number, because the mean of its divisors is an integer number (12136024800).

Almost surely, 2^421807870785 is an apocalyptic number.

It is an amenable number.

421807870785 is a deficient number, since it is larger than the sum of its proper divisors (354897716415).

421807870785 is a wasteful number, since it uses less digits than its factorization.

421807870785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43078.

The product of its (nonzero) digits is 7024640, while the sum is 57.

The spelling of 421807870785 in words is "four hundred twenty-one billion, eight hundred seven million, eight hundred seventy thousand, seven hundred eighty-five".