63191890859 has 2 divisors, whose sum is σ = 63191890860. Its totient is φ = 63191890858.

The previous prime is 63191890841. The next prime is 63191890873. The reversal of 63191890859 is 95809819136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63191890859 - 2²⁰ = 63190842283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63191890798 and 63191890807.

It is not a weakly prime, because it can be changed into another prime (63191898859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31595945429 + 31595945430.

It is an arithmetic number, because the mean of its divisors is an integer number (31595945430).

Almost surely, 2^63191890859 is an apocalyptic number.

63191890859 is a deficient number, since it is larger than the sum of its proper divisors (1).

63191890859 is an equidigital number, since it uses as much as digits as its factorization.

63191890859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 63191890859 in words is "sixty-three billion, one hundred ninety-one million, eight hundred ninety thousand, eight hundred fifty-nine".