24820440643 has 2 divisors, whose sum is σ = 24820440644. Its totient is φ = 24820440642.

The previous prime is 24820440587. The next prime is 24820440661. The reversal of 24820440643 is 34604402842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 24820440643 - 2²⁵ = 24786886211 is a prime.

It is not a weakly prime, because it can be changed into another prime (24820440143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12410220321 + 12410220322.

It is an arithmetic number, because the mean of its divisors is an integer number (12410220322).

Almost surely, 2^24820440643 is an apocalyptic number.

24820440643 is a deficient number, since it is larger than the sum of its proper divisors (1).

24820440643 is an equidigital number, since it uses as much as digits as its factorization.

24820440643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 24820440643 in words is "twenty-four billion, eight hundred twenty million, four hundred forty thousand, six hundred forty-three".