648806400023 has 2 divisors, whose sum is σ = 648806400024. Its totient is φ = 648806400022.

The previous prime is 648806399993. The next prime is 648806400031. The reversal of 648806400023 is 320004608846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648806400023 - 2³⁶ = 580086923287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648806400083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324403200011 + 324403200012.

It is an arithmetic number, because the mean of its divisors is an integer number (324403200012).

Almost surely, 2^648806400023 is an apocalyptic number.

648806400023 is a deficient number, since it is larger than the sum of its proper divisors (1).

648806400023 is an equidigital number, since it uses as much as digits as its factorization.

648806400023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 648806400023 in words is "six hundred forty-eight billion, eight hundred six million, four hundred thousand, twenty-three".