23824991491 has 16 divisors (see below), whose sum is σ = 27943671808. Its totient is φ = 19891591200.

The previous prime is 23824991459. The next prime is 23824991497. The reversal of 23824991491 is 19419942832.

It is a cyclic number.

It is not a de Polignac number, because 23824991491 - 2⁵ = 23824991459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23824991497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226875 + ... + 314836.

It is an arithmetic number, because the mean of its divisors is an integer number (1746479488).

Almost surely, 2^23824991491 is an apocalyptic number.

23824991491 is a deficient number, since it is larger than the sum of its proper divisors (4118680317).

23824991491 is a wasteful number, since it uses less digits than its factorization.

23824991491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541882.

The product of its digits is 1119744, while the sum is 52.

The spelling of 23824991491 in words is "twenty-three billion, eight hundred twenty-four million, nine hundred ninety-one thousand, four hundred ninety-one".