24452245021 has 4 divisors (see below), whose sum is σ = 24455868444. Its totient is φ = 24448621600.

The previous prime is 24452245009. The next prime is 24452245049. The reversal of 24452245021 is 12054225442.

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 7146842521 + 17305402500 = 84539^2 + 131550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24452245021 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 (24452245091) 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, 1801570 + ... + 1815091.

It is an arithmetic number, because the mean of its divisors is an integer number (6113967111).

Almost surely, 2^24452245021 is an apocalyptic number.

It is an amenable number.

24452245021 is a deficient number, since it is larger than the sum of its proper divisors (3623423).

24452245021 is an equidigital number, since it uses as much as digits as its factorization.

24452245021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623422.

The product of its (nonzero) digits is 25600, while the sum is 31.

The spelling of 24452245021 in words is "twenty-four billion, four hundred fifty-two million, two hundred forty-five thousand, twenty-one".