504643226421 has 4 divisors (see below), whose sum is σ = 672857635232. Its totient is φ = 336428817612.

The previous prime is 504643226419. The next prime is 504643226431. The reversal of 504643226421 is 124622346405.

It is a happy number.

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 not a de Polignac number, because 504643226421 - 2¹ = 504643226419 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 504643226421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504643226401) 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, 84107204401 + ... + 84107204406.

It is an arithmetic number, because the mean of its divisors is an integer number (168214408808).

Almost surely, 2^504643226421 is an apocalyptic number.

It is an amenable number.

504643226421 is a deficient number, since it is larger than the sum of its proper divisors (168214408811).

504643226421 is a wasteful number, since it uses less digits than its factorization.

504643226421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168214408810.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 504643226421 in words is "five hundred four billion, six hundred forty-three million, two hundred twenty-six thousand, four hundred twenty-one".