422855753985 has 72 divisors (see below), whose sum is σ = 852806537856. Its totient is φ = 193262126400.

The previous prime is 422855753959. The next prime is 422855753987. The reversal of 422855753985 is 589357558224.

It is a happy number.

422855753985 is a `hidden beast` number, since 4 + 2 + 28 + 5 + 575 + 39 + 8 + 5 = 666.

It is not a de Polignac number, because 422855753985 - 2⁵ = 422855753953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (422855753987) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11118472 + ... + 11156438.

It is an arithmetic number, because the mean of its divisors is an integer number (11844535248).

Almost surely, 2^422855753985 is an apocalyptic number.

422855753985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422855753985 is an abundant number, since it is smaller than the sum of its proper divisors (429950783871).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422855753985 is a wasteful number, since it uses less digits than its factorization.

422855753985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43043 (or 43033 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 63.

The spelling of 422855753985 in words is "four hundred twenty-two billion, eight hundred fifty-five million, seven hundred fifty-three thousand, nine hundred eighty-five".