123881447713 has 2 divisors, whose sum is σ = 123881447714. Its totient is φ = 123881447712.

The previous prime is 123881447647. The next prime is 123881447747. The reversal of 123881447713 is 317744188321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65069377569 + 58812070144 = 255087^2 + 242512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123881447713 is a prime.

It is a super-2 number, since 2×123881447713² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123881447113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61940723856 + 61940723857.

It is an arithmetic number, because the mean of its divisors is an integer number (61940723857).

Almost surely, 2^123881447713 is an apocalyptic number.

It is an amenable number.

123881447713 is a deficient number, since it is larger than the sum of its proper divisors (1).

123881447713 is an equidigital number, since it uses as much as digits as its factorization.

123881447713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The spelling of 123881447713 in words is "one hundred twenty-three billion, eight hundred eighty-one million, four hundred forty-seven thousand, seven hundred thirteen".