24991148839 has 4 divisors (see below), whose sum is σ = 25233781456. Its totient is φ = 24748516224.

The previous prime is 24991148803. The next prime is 24991148849. The reversal of 24991148839 is 93884119942.

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 24991148839 - 2⁹ = 24991148327 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 (24991148849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121316154 + ... + 121316359.

It is an arithmetic number, because the mean of its divisors is an integer number (6308445364).

Almost surely, 2^24991148839 is an apocalyptic number.

24991148839 is a deficient number, since it is larger than the sum of its proper divisors (242632617).

24991148839 is a wasteful number, since it uses less digits than its factorization.

24991148839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242632616.

The product of its digits is 4478976, while the sum is 58.

The spelling of 24991148839 in words is "twenty-four billion, nine hundred ninety-one million, one hundred forty-eight thousand, eight hundred thirty-nine".