23998857493 has 8 divisors (see below), whose sum is σ = 25846220288. Its totient is φ = 22151679984.

The previous prime is 23998857451. The next prime is 23998857569. The reversal of 23998857493 is 39475889932.

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

It is a cyclic number.

It is not a de Polignac number, because 23998857493 - 2²¹ = 23996760341 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 (23998858493) 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, 345496 + ... + 409102.

It is an arithmetic number, because the mean of its divisors is an integer number (3230777536).

Almost surely, 2^23998857493 is an apocalyptic number.

It is an amenable number.

23998857493 is a deficient number, since it is larger than the sum of its proper divisors (1847362795).

23998857493 is a wasteful number, since it uses less digits than its factorization.

23998857493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92643.

The product of its digits is 117573120, while the sum is 67.

The spelling of 23998857493 in words is "twenty-three billion, nine hundred ninety-eight million, eight hundred fifty-seven thousand, four hundred ninety-three".