23453533491 has 8 divisors (see below), whose sum is σ = 31282545600. Its totient is φ = 15630105192.

The previous prime is 23453533487. The next prime is 23453533547. The reversal of 23453533491 is 19433535432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23453533491 - 2² = 23453533487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23453533451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386141 + ... + 1402958.

It is an arithmetic number, because the mean of its divisors is an integer number (3910318200).

Almost surely, 2^23453533491 is an apocalyptic number.

23453533491 is a deficient number, since it is larger than the sum of its proper divisors (7829012109).

23453533491 is a wasteful number, since it uses less digits than its factorization.

23453533491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791905.

The product of its digits is 583200, while the sum is 42.

The spelling of 23453533491 in words is "twenty-three billion, four hundred fifty-three million, five hundred thirty-three thousand, four hundred ninety-one".