113889287881 has 2 divisors, whose sum is σ = 113889287882. Its totient is φ = 113889287880.

The previous prime is 113889287873. The next prime is 113889287921. The reversal of 113889287881 is 188782988311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105482048400 + 8407239481 = 324780^2 + 91691^2 .

It is a cyclic number.

It is not a de Polignac number, because 113889287881 - 2³ = 113889287873 is a prime.

It is a super-2 number, since 2×113889287881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113889287851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56944643940 + 56944643941.

It is an arithmetic number, because the mean of its divisors is an integer number (56944643941).

Almost surely, 2^113889287881 is an apocalyptic number.

It is an amenable number.

113889287881 is a deficient number, since it is larger than the sum of its proper divisors (1).

113889287881 is an equidigital number, since it uses as much as digits as its factorization.

113889287881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12386304, while the sum is 64.

The spelling of 113889287881 in words is "one hundred thirteen billion, eight hundred eighty-nine million, two hundred eighty-seven thousand, eight hundred eighty-one".