421363555623 has 6 divisors (see below), whose sum is σ = 608636247024. Its totient is φ = 280909037076.

The previous prime is 421363555603. The next prime is 421363555643. The reversal of 421363555623 is 326555363124.

421363555623 is a `hidden beast` number, since 4 + 2 + 1 + 3 + 635 + 5 + 5 + 6 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (421363555603) and next prime (421363555643).

It is not a de Polignac number, because 421363555623 - 2²⁹ = 420826684711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421363555603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23409086415 + ... + 23409086432.

It is an arithmetic number, because the mean of its divisors is an integer number (101439374504).

Almost surely, 2^421363555623 is an apocalyptic number.

421363555623 is a deficient number, since it is larger than the sum of its proper divisors (187272691401).

421363555623 is a wasteful number, since it uses less digits than its factorization.

421363555623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46818172853 (or 46818172850 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The spelling of 421363555623 in words is "four hundred twenty-one billion, three hundred sixty-three million, five hundred fifty-five thousand, six hundred twenty-three".