111666622741 has 2 divisors, whose sum is σ = 111666622742. Its totient is φ = 111666622740.

The previous prime is 111666622733. The next prime is 111666622759. The reversal of 111666622741 is 147226666111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85342858225 + 26323764516 = 292135^2 + 162246^2 .

It is a cyclic number.

It is not a de Polignac number, because 111666622741 - 2³ = 111666622733 is a prime.

It is a super-3 number, since 3×111666622741³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111666622721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55833311370 + 55833311371.

It is an arithmetic number, because the mean of its divisors is an integer number (55833311371).

Almost surely, 2^111666622741 is an apocalyptic number.

It is an amenable number.

111666622741 is a deficient number, since it is larger than the sum of its proper divisors (1).

111666622741 is an equidigital number, since it uses as much as digits as its factorization.

111666622741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The spelling of 111666622741 in words is "one hundred eleven billion, six hundred sixty-six million, six hundred twenty-two thousand, seven hundred forty-one".