63145265296891 has 2 divisors, whose sum is σ = 63145265296892. Its totient is φ = 63145265296890.

The previous prime is 63145265296849. The next prime is 63145265296937. The reversal of 63145265296891 is 19869256254136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63145265296891 - 2²⁵ = 63145231742459 is a prime.

It is not a weakly prime, because it can be changed into another prime (63145265296291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31572632648445 + 31572632648446.

It is an arithmetic number, because the mean of its divisors is an integer number (31572632648446).

Almost surely, 2^{63145265296891} is an apocalyptic number.

63145265296891 is a deficient number, since it is larger than the sum of its proper divisors (1).

63145265296891 is an equidigital number, since it uses as much as digits as its factorization.

63145265296891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167961600, while the sum is 67.

The spelling of 63145265296891 in words is "sixty-three trillion, one hundred forty-five billion, two hundred sixty-five million, two hundred ninety-six thousand, eight hundred ninety-one".