503564640344 has 64 divisors (see below), whose sum is σ = 1011288512160. Its totient is φ = 234240122880.

The previous prime is 503564640323. The next prime is 503564640349. The reversal of 503564640344 is 443046465305.

It is a junction number, because it is equal to n+sod(n) for n = 503564640295 and 503564640304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503564640349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6612404 + ... + 6688124.

Almost surely, 2^503564640344 is an apocalyptic number.

It is an amenable number.

503564640344 is an abundant number, since it is smaller than the sum of its proper divisors (507723871816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503564640344 is a wasteful number, since it uses less digits than its factorization.

503564640344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76308 (or 76304 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 503564640344 in words is "five hundred three billion, five hundred sixty-four million, six hundred forty thousand, three hundred forty-four".