111709361749 has 2 divisors, whose sum is σ = 111709361750. Its totient is φ = 111709361748.

The previous prime is 111709361713. The next prime is 111709361761. The reversal of 111709361749 is 947163907111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84001428900 + 27707932849 = 289830^2 + 166457^2 .

It is a cyclic number.

It is not a de Polignac number, because 111709361749 - 2⁹ = 111709361237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111701361749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55854680874 + 55854680875.

It is an arithmetic number, because the mean of its divisors is an integer number (55854680875).

Almost surely, 2^111709361749 is an apocalyptic number.

It is an amenable number.

111709361749 is a deficient number, since it is larger than the sum of its proper divisors (1).

111709361749 is an equidigital number, since it uses as much as digits as its factorization.

111709361749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 49.

The spelling of 111709361749 in words is "one hundred eleven billion, seven hundred nine million, three hundred sixty-one thousand, seven hundred forty-nine".