24945716921 has 8 divisors (see below), whose sum is σ = 26414629920. Its totient is φ = 23476972608.

The previous prime is 24945716891. The next prime is 24945717007. The reversal of 24945716921 is 12961754942.

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 24945716921 - 2¹⁰ = 24945715897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24945716921.

It is not an unprimeable number, because it can be changed into a prime (24945716321) 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, 387410 + ... + 447188.

It is an arithmetic number, because the mean of its divisors is an integer number (3301828740).

Almost surely, 2^24945716921 is an apocalyptic number.

It is an amenable number.

24945716921 is a deficient number, since it is larger than the sum of its proper divisors (1468912999).

24945716921 is a wasteful number, since it uses less digits than its factorization.

24945716921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84343.

The product of its digits is 1088640, while the sum is 50.

The spelling of 24945716921 in words is "twenty-four billion, nine hundred forty-five million, seven hundred sixteen thousand, nine hundred twenty-one".