68884402049 has 2 divisors, whose sum is σ = 68884402050. Its totient is φ = 68884402048.

The previous prime is 68884402039. The next prime is 68884402063. The reversal of 68884402049 is 94020448886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58273960000 + 10610442049 = 241400^2 + 103007^2 .

It is a cyclic number.

It is not a de Polignac number, because 68884402049 - 2¹⁶ = 68884336513 is a prime.

It is not a weakly prime, because it can be changed into another prime (68884402009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34442201024 + 34442201025.

It is an arithmetic number, because the mean of its divisors is an integer number (34442201025).

Almost surely, 2^68884402049 is an apocalyptic number.

It is an amenable number.

68884402049 is a deficient number, since it is larger than the sum of its proper divisors (1).

68884402049 is an equidigital number, since it uses as much as digits as its factorization.

68884402049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 68884402049 in words is "sixty-eight billion, eight hundred eighty-four million, four hundred two thousand, forty-nine".