23835505563 has 12 divisors (see below), whose sum is σ = 34430699160. Its totient is φ = 15889582176.

The previous prime is 23835505553. The next prime is 23835505583. The reversal of 23835505563 is 36550553832.

23835505563 is a `hidden beast` number, since 2 + 3 + 8 + 35 + 50 + 5 + 563 = 666.

It is not a de Polignac number, because 23835505563 - 2⁹ = 23835505051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23835505553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191020 + ... + 290102.

It is an arithmetic number, because the mean of its divisors is an integer number (2869224930).

Almost surely, 2^23835505563 is an apocalyptic number.

23835505563 is a deficient number, since it is larger than the sum of its proper divisors (10595193597).

23835505563 is a wasteful number, since it uses less digits than its factorization.

23835505563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125818 (or 125815 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 23835505563 in words is "twenty-three billion, eight hundred thirty-five million, five hundred five thousand, five hundred sixty-three".