63854759149 has 2 divisors, whose sum is σ = 63854759150. Its totient is φ = 63854759148.

The previous prime is 63854759123. The next prime is 63854759167. The reversal of 63854759149 is 94195745836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57177417924 + 6677341225 = 239118^2 + 81715^2 .

It is a cyclic number.

It is not a de Polignac number, because 63854759149 - 2⁹ = 63854758637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63854759119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31927379574 + 31927379575.

It is an arithmetic number, because the mean of its divisors is an integer number (31927379575).

Almost surely, 2^63854759149 is an apocalyptic number.

It is an amenable number.

63854759149 is a deficient number, since it is larger than the sum of its proper divisors (1).

63854759149 is an equidigital number, since it uses as much as digits as its factorization.

63854759149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 61.

The spelling of 63854759149 in words is "sixty-three billion, eight hundred fifty-four million, seven hundred fifty-nine thousand, one hundred forty-nine".