23203457606533 has 4 divisors (see below), whose sum is σ = 23205062175148. Its totient is φ = 23201853037920.

The previous prime is 23203457606509. The next prime is 23203457606551. The reversal of 23203457606533 is 33560675430232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 415274558724 + 22788183047809 = 644418^2 + 4773697^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203457606533 - 2⁵ = 23203457606501 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 (23203457604533) 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, 802262616 + ... + 802291537.

It is an arithmetic number, because the mean of its divisors is an integer number (5801265543787).

Almost surely, 2^{23203457606533} is an apocalyptic number.

It is an amenable number.

23203457606533 is a deficient number, since it is larger than the sum of its proper divisors (1604568615).

23203457606533 is a wasteful number, since it uses less digits than its factorization.

23203457606533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604568614.

The product of its (nonzero) digits is 8164800, while the sum is 49.

The spelling of 23203457606533 in words is "twenty-three trillion, two hundred three billion, four hundred fifty-seven million, six hundred six thousand, five hundred thirty-three".