24878282645 has 4 divisors (see below), whose sum is σ = 29853939180. Its totient is φ = 19902626112.

The previous prime is 24878282641. The next prime is 24878282669. The reversal of 24878282645 is 54628287842.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11197237489 + 13681045156 = 105817^2 + 116966^2 .

It is a cyclic number.

It is not a de Polignac number, because 24878282645 - 2² = 24878282641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24878282641) 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, 2487828260 + ... + 2487828269.

It is an arithmetic number, because the mean of its divisors is an integer number (7463484795).

Almost surely, 2^24878282645 is an apocalyptic number.

It is an amenable number.

24878282645 is a deficient number, since it is larger than the sum of its proper divisors (4975656535).

24878282645 is an equidigital number, since it uses as much as digits as its factorization.

24878282645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975656534.

The product of its digits is 13762560, while the sum is 56.

The spelling of 24878282645 in words is "twenty-four billion, eight hundred seventy-eight million, two hundred eighty-two thousand, six hundred forty-five".