113978799281 has 2 divisors, whose sum is σ = 113978799282. Its totient is φ = 113978799280.

The previous prime is 113978799227. The next prime is 113978799289. The reversal of 113978799281 is 182997879311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82575769600 + 31403029681 = 287360^2 + 177209^2 .

It is a cyclic number.

It is not a de Polignac number, because 113978799281 - 2³⁴ = 96798930097 is a prime.

It is a super-2 number, since 2×113978799281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113978799289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56989399640 + 56989399641.

It is an arithmetic number, because the mean of its divisors is an integer number (56989399641).

Almost surely, 2^113978799281 is an apocalyptic number.

It is an amenable number.

113978799281 is a deficient number, since it is larger than the sum of its proper divisors (1).

113978799281 is an equidigital number, since it uses as much as digits as its factorization.

113978799281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 65.

The spelling of 113978799281 in words is "one hundred thirteen billion, nine hundred seventy-eight million, seven hundred ninety-nine thousand, two hundred eighty-one".