111355162909 has 2 divisors, whose sum is σ = 111355162910. Its totient is φ = 111355162908.

The previous prime is 111355162907. The next prime is 111355162921. The reversal of 111355162909 is 909261553111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101599650009 + 9755512900 = 318747^2 + 98770^2 .

It is a cyclic number.

It is not a de Polignac number, because 111355162909 - 2¹ = 111355162907 is a prime.

Together with 111355162907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111355162901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55677581454 + 55677581455.

It is an arithmetic number, because the mean of its divisors is an integer number (55677581455).

Almost surely, 2^111355162909 is an apocalyptic number.

It is an amenable number.

111355162909 is a deficient number, since it is larger than the sum of its proper divisors (1).

111355162909 is an equidigital number, since it uses as much as digits as its factorization.

111355162909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 43.

The spelling of 111355162909 in words is "one hundred eleven billion, three hundred fifty-five million, one hundred sixty-two thousand, nine hundred nine".