63955855933 has 2 divisors, whose sum is σ = 63955855934. Its totient is φ = 63955855932.

The previous prime is 63955855879. The next prime is 63955855949. The reversal of 63955855933 is 33955855936.

63955855933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63858300804 + 97555129 = 252702^2 + 9877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63955855933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63955855973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31977927966 + 31977927967.

It is an arithmetic number, because the mean of its divisors is an integer number (31977927967).

Almost surely, 2^63955855933 is an apocalyptic number.

It is an amenable number.

63955855933 is a deficient number, since it is larger than the sum of its proper divisors (1).

63955855933 is an equidigital number, since it uses as much as digits as its factorization.

63955855933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610000, while the sum is 61.

The spelling of 63955855933 in words is "sixty-three billion, nine hundred fifty-five million, eight hundred fifty-five thousand, nine hundred thirty-three".