621523356223 has 18 divisors (see below), whose sum is σ = 794698702728. Its totient is φ = 484303909320.

The previous prime is 621523356217. The next prime is 621523356241. The reversal of 621523356223 is 322653325126.

It is not a de Polignac number, because 621523356223 - 2³³ = 612933421631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621523356203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 52407915 + ... + 52419772.

Almost surely, 2^621523356223 is an apocalyptic number.

621523356223 is a deficient number, since it is larger than the sum of its proper divisors (173175346505).

621523356223 is a wasteful number, since it uses less digits than its factorization.

621523356223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104827723 (or 104827705 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The spelling of 621523356223 in words is "six hundred twenty-one billion, five hundred twenty-three million, three hundred fifty-six thousand, two hundred twenty-three".