423899278431 has 16 divisors (see below), whose sum is σ = 579064399200. Its totient is φ = 275668743680.

The previous prime is 423899278417. The next prime is 423899278457. The reversal of 423899278431 is 134872998324.

It is a cyclic number.

It is not a de Polignac number, because 423899278431 - 2⁵ = 423899278399 is a prime.

It is a super-2 number, since 2×423899278431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423899278331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669451 + ... + 1138403.

It is an arithmetic number, because the mean of its divisors is an integer number (36191524950).

Almost surely, 2^423899278431 is an apocalyptic number.

423899278431 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

423899278431 is a deficient number, since it is larger than the sum of its proper divisors (155165120769).

423899278431 is a wasteful number, since it uses less digits than its factorization.

423899278431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476346.

The product of its digits is 20901888, while the sum is 60.

The spelling of 423899278431 in words is "four hundred twenty-three billion, eight hundred ninety-nine million, two hundred seventy-eight thousand, four hundred thirty-one".