113542780081 has 2 divisors, whose sum is σ = 113542780082. Its totient is φ = 113542780080.

The previous prime is 113542780063. The next prime is 113542780093. The reversal of 113542780081 is 180087245311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110453199025 + 3089581056 = 332345^2 + 55584^2 .

It is a cyclic number.

It is not a de Polignac number, because 113542780081 - 2¹³ = 113542771889 is a prime.

It is a super-2 number, since 2×113542780081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113542780031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56771390040 + 56771390041.

It is an arithmetic number, because the mean of its divisors is an integer number (56771390041).

Almost surely, 2^113542780081 is an apocalyptic number.

It is an amenable number.

113542780081 is a deficient number, since it is larger than the sum of its proper divisors (1).

113542780081 is an equidigital number, since it uses as much as digits as its factorization.

113542780081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 113542780081 in words is "one hundred thirteen billion, five hundred forty-two million, seven hundred eighty thousand, eighty-one".