63917398291 has 16 divisors (see below), whose sum is σ = 68173747200. Its totient is φ = 59791594720.

The previous prime is 63917398283. The next prime is 63917398297. The reversal of 63917398291 is 19289371936.

It is a cyclic number.

It is not a de Polignac number, because 63917398291 - 2³ = 63917398283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63917398297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294810 + ... + 463408.

It is an arithmetic number, because the mean of its divisors is an integer number (4260859200).

Almost surely, 2^63917398291 is an apocalyptic number.

63917398291 is a deficient number, since it is larger than the sum of its proper divisors (4256348909).

63917398291 is a wasteful number, since it uses less digits than its factorization.

63917398291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168986.

The product of its digits is 4408992, while the sum is 58.

The spelling of 63917398291 in words is "sixty-three billion, nine hundred seventeen million, three hundred ninety-eight thousand, two hundred ninety-one".