63818885423 has 2 divisors, whose sum is σ = 63818885424. Its totient is φ = 63818885422.

The previous prime is 63818885371. The next prime is 63818885441. The reversal of 63818885423 is 32458881836.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63818885423 - 2¹⁰ = 63818884399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63818885323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31909442711 + 31909442712.

It is an arithmetic number, because the mean of its divisors is an integer number (31909442712).

Almost surely, 2^63818885423 is an apocalyptic number.

63818885423 is a deficient number, since it is larger than the sum of its proper divisors (1).

63818885423 is an equidigital number, since it uses as much as digits as its factorization.

63818885423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8847360, while the sum is 56.

The spelling of 63818885423 in words is "sixty-three billion, eight hundred eighteen million, eight hundred eighty-five thousand, four hundred twenty-three".