423944863241 has 4 divisors (see below), whose sum is σ = 446257750800. Its totient is φ = 401631975684.

The previous prime is 423944863213. The next prime is 423944863247. The reversal of 423944863241 is 142368449324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-423944863241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423944863241.

It is not an unprimeable number, because it can be changed into a prime (423944863247) 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, 11156443751 + ... + 11156443788.

It is an arithmetic number, because the mean of its divisors is an integer number (111564437700).

Almost surely, 2^423944863241 is an apocalyptic number.

It is an amenable number.

423944863241 is a deficient number, since it is larger than the sum of its proper divisors (22312887559).

423944863241 is a wasteful number, since it uses less digits than its factorization.

423944863241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22312887558.

The product of its digits is 3981312, while the sum is 50.

The spelling of 423944863241 in words is "four hundred twenty-three billion, nine hundred forty-four million, eight hundred sixty-three thousand, two hundred forty-one".