111609337501 has 2 divisors, whose sum is σ = 111609337502. Its totient is φ = 111609337500.

The previous prime is 111609337451. The next prime is 111609337513. The reversal of 111609337501 is 105733906111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109527240601 + 2082096900 = 330949^2 + 45630^2 .

It is an emirp because it is prime and its reverse (105733906111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111609337501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111609337591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55804668750 + 55804668751.

It is an arithmetic number, because the mean of its divisors is an integer number (55804668751).

Almost surely, 2^111609337501 is an apocalyptic number.

It is an amenable number.

111609337501 is a deficient number, since it is larger than the sum of its proper divisors (1).

111609337501 is an equidigital number, since it uses as much as digits as its factorization.

111609337501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 37.

The spelling of 111609337501 in words is "one hundred eleven billion, six hundred nine million, three hundred thirty-seven thousand, five hundred one".