110665610639 has 2 divisors, whose sum is σ = 110665610640. Its totient is φ = 110665610638.

The previous prime is 110665610621. The next prime is 110665610669. The reversal of 110665610639 is 936016566011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110665610639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110665610639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110665610669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55332805319 + 55332805320.

It is an arithmetic number, because the mean of its divisors is an integer number (55332805320).

Almost surely, 2^110665610639 is an apocalyptic number.

110665610639 is a deficient number, since it is larger than the sum of its proper divisors (1).

110665610639 is an equidigital number, since it uses as much as digits as its factorization.

110665610639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 110665610639 in words is "one hundred ten billion, six hundred sixty-five million, six hundred ten thousand, six hundred thirty-nine".