115056860911781 has 2 divisors, whose sum is σ = 115056860911782. Its totient is φ = 115056860911780.

The previous prime is 115056860911697. The next prime is 115056860911801. The reversal of 115056860911781 is 187119068650511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115033561636900 + 23299274881 = 10725370^2 + 152641^2 .

It is a cyclic number.

It is not a de Polignac number, because 115056860911781 - 2¹⁸ = 115056860649637 is a prime.

It is a super-2 number, since 2×115056860911781² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115056860911781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115056860910781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57528430455890 + 57528430455891.

It is an arithmetic number, because the mean of its divisors is an integer number (57528430455891).

Almost surely, 2^{115056860911781} is an apocalyptic number.

It is an amenable number.

115056860911781 is a deficient number, since it is larger than the sum of its proper divisors (1).

115056860911781 is an equidigital number, since it uses as much as digits as its factorization.

115056860911781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 59.

The spelling of 115056860911781 in words is "one hundred fifteen trillion, fifty-six billion, eight hundred sixty million, nine hundred eleven thousand, seven hundred eighty-one".