111849656749 has 2 divisors, whose sum is σ = 111849656750. Its totient is φ = 111849656748.

The previous prime is 111849656689. The next prime is 111849656797. The reversal of 111849656749 is 947656948111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64257180100 + 47592476649 = 253490^2 + 218157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111849656749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111849656249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55924828374 + 55924828375.

It is an arithmetic number, because the mean of its divisors is an integer number (55924828375).

Almost surely, 2^111849656749 is an apocalyptic number.

It is an amenable number.

111849656749 is a deficient number, since it is larger than the sum of its proper divisors (1).

111849656749 is an equidigital number, since it uses as much as digits as its factorization.

111849656749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 61.

The spelling of 111849656749 in words is "one hundred eleven billion, eight hundred forty-nine million, six hundred fifty-six thousand, seven hundred forty-nine".