63883993837 has 2 divisors, whose sum is σ = 63883993838. Its totient is φ = 63883993836.

The previous prime is 63883993763. The next prime is 63883993879. The reversal of 63883993837 is 73839938836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63743120676 + 140873161 = 252474^2 + 11869^2 .

It is a cyclic number.

It is not a de Polignac number, because 63883993837 - 2⁷ = 63883993709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63883993237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31941996918 + 31941996919.

It is an arithmetic number, because the mean of its divisors is an integer number (31941996919).

Almost surely, 2^63883993837 is an apocalyptic number.

It is an amenable number.

63883993837 is a deficient number, since it is larger than the sum of its proper divisors (1).

63883993837 is an equidigital number, since it uses as much as digits as its factorization.

63883993837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141087744, while the sum is 67.

The spelling of 63883993837 in words is "sixty-three billion, eight hundred eighty-three million, nine hundred ninety-three thousand, eight hundred thirty-seven".