623404056517 has 16 divisors (see below), whose sum is σ = 693005362560. Its totient is φ = 555960433600.

The previous prime is 623404056503. The next prime is 623404056521. The reversal of 623404056517 is 715650404326.

It is not a de Polignac number, because 623404056517 - 2¹⁹ = 623403532229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623404056547) 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, 4336167 + ... + 4477627.

It is an arithmetic number, because the mean of its divisors is an integer number (43312835160).

Almost surely, 2^623404056517 is an apocalyptic number.

It is an amenable number.

623404056517 is a deficient number, since it is larger than the sum of its proper divisors (69601306043).

623404056517 is a wasteful number, since it uses less digits than its factorization.

623404056517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149084.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 623404056517 in words is "six hundred twenty-three billion, four hundred four million, fifty-six thousand, five hundred seventeen".