26442640403 has 2 divisors, whose sum is σ = 26442640404. Its totient is φ = 26442640402.

The previous prime is 26442640387. The next prime is 26442640447. The reversal of 26442640403 is 30404624462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26442640403 - 2⁴ = 26442640387 is a prime.

It is not a weakly prime, because it can be changed into another prime (26442640303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13221320201 + 13221320202.

It is an arithmetic number, because the mean of its divisors is an integer number (13221320202).

Almost surely, 2^26442640403 is an apocalyptic number.

26442640403 is a deficient number, since it is larger than the sum of its proper divisors (1).

26442640403 is an equidigital number, since it uses as much as digits as its factorization.

26442640403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 35.

The spelling of 26442640403 in words is "twenty-six billion, four hundred forty-two million, six hundred forty thousand, four hundred three".