63825921823 has 2 divisors, whose sum is σ = 63825921824. Its totient is φ = 63825921822.

The previous prime is 63825921799. The next prime is 63825921851. The reversal of 63825921823 is 32812952836.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63825921823 - 2²⁵ = 63792367391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63825921023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31912960911 + 31912960912.

It is an arithmetic number, because the mean of its divisors is an integer number (31912960912).

Almost surely, 2^63825921823 is an apocalyptic number.

63825921823 is a deficient number, since it is larger than the sum of its proper divisors (1).

63825921823 is an equidigital number, since it uses as much as digits as its factorization.

63825921823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The spelling of 63825921823 in words is "sixty-three billion, eight hundred twenty-five million, nine hundred twenty-one thousand, eight hundred twenty-three".