116534645081 has 2 divisors, whose sum is σ = 116534645082. Its totient is φ = 116534645080.

The previous prime is 116534645053. The next prime is 116534645113. The reversal of 116534645081 is 180546435611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108070645081 + 8464000000 = 328741^2 + 92000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116534645081 is a prime.

It is a super-2 number, since 2×116534645081² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (116534645041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58267322540 + 58267322541.

It is an arithmetic number, because the mean of its divisors is an integer number (58267322541).

Almost surely, 2^116534645081 is an apocalyptic number.

It is an amenable number.

116534645081 is a deficient number, since it is larger than the sum of its proper divisors (1).

116534645081 is an equidigital number, since it uses as much as digits as its factorization.

116534645081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 116534645081 in words is "one hundred sixteen billion, five hundred thirty-four million, six hundred forty-five thousand, eighty-one".