111343250661 has 16 divisors (see below), whose sum is σ = 149311169280. Its totient is φ = 73802266560.

The previous prime is 111343250659. The next prime is 111343250663. The reversal of 111343250661 is 166052343111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111343250659) and next prime (111343250663).

It is not a de Polignac number, because 111343250661 - 2¹ = 111343250659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111343250663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2715831 + ... + 2756523.

It is an arithmetic number, because the mean of its divisors is an integer number (9331948080).

Almost surely, 2^111343250661 is an apocalyptic number.

It is an amenable number.

111343250661 is a deficient number, since it is larger than the sum of its proper divisors (37967918619).

111343250661 is a wasteful number, since it uses less digits than its factorization.

111343250661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45916.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 111343250661 its reverse (166052343111), we get a palindrome (277395593772).

The spelling of 111343250661 in words is "one hundred eleven billion, three hundred forty-three million, two hundred fifty thousand, six hundred sixty-one".