424881128568431 has 4 divisors (see below), whose sum is σ = 424881170481600. Its totient is φ = 424881086655264.

The previous prime is 424881128568427. The next prime is 424881128568439. The reversal of 424881128568431 is 134865821188424.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 424881128568431 - 2² = 424881128568427 is a prime.

It is a super-2 number, since 2×424881128568431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424881128568439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4806530 + ... + 29544288.

It is an arithmetic number, because the mean of its divisors is an integer number (106220292620400).

Almost surely, 2^{424881128568431} is an apocalyptic number.

424881128568431 is a deficient number, since it is larger than the sum of its proper divisors (41913169).

424881128568431 is a wasteful number, since it uses less digits than its factorization.

424881128568431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41913168.

The product of its digits is 94371840, while the sum is 65.

The spelling of 424881128568431 in words is "four hundred twenty-four trillion, eight hundred eighty-one billion, one hundred twenty-eight million, five hundred sixty-eight thousand, four hundred thirty-one".