111665738357 has 2 divisors, whose sum is σ = 111665738358. Its totient is φ = 111665738356.

The previous prime is 111665738311. The next prime is 111665738389. The reversal of 111665738357 is 753837566111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90917928676 + 20747809681 = 301526^2 + 144041^2 .

It is a cyclic number.

It is not a de Polignac number, because 111665738357 - 2¹⁰ = 111665737333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111665738299 and 111665738308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111665738057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55832869178 + 55832869179.

It is an arithmetic number, because the mean of its divisors is an integer number (55832869179).

Almost surely, 2^111665738357 is an apocalyptic number.

It is an amenable number.

111665738357 is a deficient number, since it is larger than the sum of its proper divisors (1).

111665738357 is an equidigital number, since it uses as much as digits as its factorization.

111665738357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 53.

The spelling of 111665738357 in words is "one hundred eleven billion, six hundred sixty-five million, seven hundred thirty-eight thousand, three hundred fifty-seven".