63999999941 has 2 divisors, whose sum is σ = 63999999942. Its totient is φ = 63999999940.

The previous prime is 63999999929. The next prime is 63999999997. The reversal of 63999999941 is 14999999936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45658715041 + 18341284900 = 213679^2 + 135430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63999999941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63999999541) 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, 31999999970 + 31999999971.

It is an arithmetic number, because the mean of its divisors is an integer number (31999999971).

Almost surely, 2^63999999941 is an apocalyptic number.

It is an amenable number.

63999999941 is a deficient number, since it is larger than the sum of its proper divisors (1).

63999999941 is an equidigital number, since it uses as much as digits as its factorization.

63999999941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 344373768, while the sum is 77.

The spelling of 63999999941 in words is "sixty-three billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-one".