23532638533 has 4 divisors (see below), whose sum is σ = 23533195840. Its totient is φ = 23532081228.

The previous prime is 23532638483. The next prime is 23532638543. The reversal of 23532638533 is 33583623532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23532638533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23532638533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23532638543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209613 + ... + 301666.

It is an arithmetic number, because the mean of its divisors is an integer number (5883298960).

Almost surely, 2^23532638533 is an apocalyptic number.

It is an amenable number.

23532638533 is a deficient number, since it is larger than the sum of its proper divisors (557307).

23532638533 is an equidigital number, since it uses as much as digits as its factorization.

23532638533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557306.

The product of its digits is 1166400, while the sum is 43.

The spelling of 23532638533 in words is "twenty-three billion, five hundred thirty-two million, six hundred thirty-eight thousand, five hundred thirty-three".