422428173291 has 48 divisors (see below), whose sum is σ = 643807906560. Its totient is φ = 266385430080.

The previous prime is 422428173283. The next prime is 422428173313. The reversal of 422428173291 is 192371824224.

422428173291 is a `hidden beast` number, since 4 + 2 + 242 + 81 + 7 + 329 + 1 = 666.

It is not a de Polignac number, because 422428173291 - 2³ = 422428173283 is a prime.

It is a super-2 number, since 2×422428173291² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422428173691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6675100 + ... + 6738086.

It is an arithmetic number, because the mean of its divisors is an integer number (13412664720).

Almost surely, 2^422428173291 is an apocalyptic number.

422428173291 is a deficient number, since it is larger than the sum of its proper divisors (221379733269).

422428173291 is a wasteful number, since it uses less digits than its factorization.

422428173291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63376 (or 63373 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 422428173291 in words is "four hundred twenty-two billion, four hundred twenty-eight million, one hundred seventy-three thousand, two hundred ninety-one".