23533553603 has 4 divisors (see below), whose sum is σ = 26895489840. Its totient is φ = 20171617368.

The previous prime is 23533553597. The next prime is 23533553671. The reversal of 23533553603 is 30635533532.

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

It is not a de Polignac number, because 23533553603 - 2²² = 23529359299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23533559603) 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, 1680968108 + ... + 1680968121.

It is an arithmetic number, because the mean of its divisors is an integer number (6723872460).

Almost surely, 2^23533553603 is an apocalyptic number.

23533553603 is a deficient number, since it is larger than the sum of its proper divisors (3361936237).

23533553603 is an equidigital number, since it uses as much as digits as its factorization.

23533553603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361936236.

The product of its (nonzero) digits is 364500, while the sum is 38.

The spelling of 23533553603 in words is "twenty-three billion, five hundred thirty-three million, five hundred fifty-three thousand, six hundred three".