116665560641 has 12 divisors (see below), whose sum is σ = 135719522820. Its totient is φ = 99994245120.

The previous prime is 116665560623. The next prime is 116665560647. The reversal of 116665560641 is 146065566611.

It can be written as a sum of positive squares in 2 ways, for example, as 78509798416 + 38155762225 = 280196^2 + 195335^2 .

It is not a de Polignac number, because 116665560641 - 2²⁶ = 116598451777 is a prime.

It is a super-2 number, since 2×116665560641² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116665560647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1295561 + ... + 1382681.

It is an arithmetic number, because the mean of its divisors is an integer number (11309960235).

Almost surely, 2^116665560641 is an apocalyptic number.

It is an amenable number.

116665560641 is a deficient number, since it is larger than the sum of its proper divisors (19053962179).

116665560641 is an equidigital number, since it uses as much as digits as its factorization.

116665560641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114464 (or 114457 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 116665560641 in words is "one hundred sixteen billion, six hundred sixty-five million, five hundred sixty thousand, six hundred forty-one".