23489995843 has 4 divisors (see below), whose sum is σ = 23527944760. Its totient is φ = 23452046928.

The previous prime is 23489995783. The next prime is 23489995883. The reversal of 23489995843 is 34859998432.

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

It is a cyclic number.

It is not a de Polignac number, because 23489995843 - 2²¹ = 23487898691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23489995883) 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, 18973530 + ... + 18974767.

It is an arithmetic number, because the mean of its divisors is an integer number (5881986190).

Almost surely, 2^23489995843 is an apocalyptic number.

23489995843 is a deficient number, since it is larger than the sum of its proper divisors (37948917).

23489995843 is an equidigital number, since it uses as much as digits as its factorization.

23489995843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37948916.

The product of its digits is 67184640, while the sum is 64.

The spelling of 23489995843 in words is "twenty-three billion, four hundred eighty-nine million, nine hundred ninety-five thousand, eight hundred forty-three".