111344616261 has 12 divisors (see below), whose sum is σ = 165177899692. Its totient is φ = 72223534656.

The previous prime is 111344616247. The next prime is 111344616263. The reversal of 111344616261 is 162616443111.

111344616261 is a `hidden beast` number, since 1 + 1 + 1 + 34 + 4 + 616 + 2 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 95842872225 + 15501744036 = 309585^2 + 124506^2 .

It is not a de Polignac number, because 111344616261 - 2⁹ = 111344615749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111344616263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167183776 + ... + 167184441.

Almost surely, 2^111344616261 is an apocalyptic number.

It is an amenable number.

111344616261 is a deficient number, since it is larger than the sum of its proper divisors (53833283431).

111344616261 is a wasteful number, since it uses less digits than its factorization.

111344616261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334368260 (or 334368257 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The spelling of 111344616261 in words is "one hundred eleven billion, three hundred forty-four million, six hundred sixteen thousand, two hundred sixty-one".