63401855423 has 2 divisors, whose sum is σ = 63401855424. Its totient is φ = 63401855422.

The previous prime is 63401855359. The next prime is 63401855437. The reversal of 63401855423 is 32455810436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63401855423 - 2⁶ = 63401855359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63401855483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31700927711 + 31700927712.

It is an arithmetic number, because the mean of its divisors is an integer number (31700927712).

Almost surely, 2^63401855423 is an apocalyptic number.

63401855423 is a deficient number, since it is larger than the sum of its proper divisors (1).

63401855423 is an equidigital number, since it uses as much as digits as its factorization.

63401855423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 63401855423 in words is "sixty-three billion, four hundred one million, eight hundred fifty-five thousand, four hundred twenty-three".