111665275607 has 2 divisors, whose sum is σ = 111665275608. Its totient is φ = 111665275606.

The previous prime is 111665275549. The next prime is 111665275627. The reversal of 111665275607 is 706572566111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (706572566111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111665275607 - 2¹⁶ = 111665210071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111665275627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55832637803 + 55832637804.

It is an arithmetic number, because the mean of its divisors is an integer number (55832637804).

Almost surely, 2^111665275607 is an apocalyptic number.

111665275607 is a deficient number, since it is larger than the sum of its proper divisors (1).

111665275607 is an equidigital number, since it uses as much as digits as its factorization.

111665275607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 111665275607 in words is "one hundred eleven billion, six hundred sixty-five million, two hundred seventy-five thousand, six hundred seven".