24420493451 has 4 divisors (see below), whose sum is σ = 25705782600. Its totient is φ = 23135204304.

The previous prime is 24420493441. The next prime is 24420493453. The reversal of 24420493451 is 15439402442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15439402442 = 2 ⋅7719701221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24420493451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24420493453) 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, 642644546 + ... + 642644583.

It is an arithmetic number, because the mean of its divisors is an integer number (6426445650).

Almost surely, 2^24420493451 is an apocalyptic number.

24420493451 is a deficient number, since it is larger than the sum of its proper divisors (1285289149).

24420493451 is a wasteful number, since it uses less digits than its factorization.

24420493451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285289148.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 24420493451 its reverse (15439402442), we get a palindrome (39859895893).

The spelling of 24420493451 in words is "twenty-four billion, four hundred twenty million, four hundred ninety-three thousand, four hundred fifty-one".