63959538898919 has 2 divisors, whose sum is σ = 63959538898920. Its totient is φ = 63959538898918.

The previous prime is 63959538898901. The next prime is 63959538898993. The reversal of 63959538898919 is 91989883595936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63959538898919 - 2⁸ = 63959538898663 is a prime.

It is a super-2 number, since 2×63959538898919² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63959538898999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31979769449459 + 31979769449460.

It is an arithmetic number, because the mean of its divisors is an integer number (31979769449460).

Almost surely, 2^{63959538898919} is an apocalyptic number.

63959538898919 is a deficient number, since it is larger than the sum of its proper divisors (1).

63959538898919 is an equidigital number, since it uses as much as digits as its factorization.

63959538898919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40814668800, while the sum is 92.

The spelling of 63959538898919 in words is "sixty-three trillion, nine hundred fifty-nine billion, five hundred thirty-eight million, eight hundred ninety-eight thousand, nine hundred nineteen".