63896946877 has 2 divisors, whose sum is σ = 63896946878. Its totient is φ = 63896946876.

The previous prime is 63896946871. The next prime is 63896946889. The reversal of 63896946877 is 77864969836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43758782596 + 20138164281 = 209186^2 + 141909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63896946877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63896946871) 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 as a sum of consecutive naturals, namely, 31948473438 + 31948473439.

It is an arithmetic number, because the mean of its divisors is an integer number (31948473439).

Almost surely, 2^63896946877 is an apocalyptic number.

It is an amenable number.

63896946877 is a deficient number, since it is larger than the sum of its proper divisors (1).

63896946877 is an equidigital number, since it uses as much as digits as its factorization.

63896946877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658409472, while the sum is 73.

The spelling of 63896946877 in words is "sixty-three billion, eight hundred ninety-six million, nine hundred forty-six thousand, eight hundred seventy-seven".