109944477081 has 6 divisors (see below), whose sum is σ = 158808689130. Its totient is φ = 73296318048.

The previous prime is 109944477073. The next prime is 109944477089. The reversal of 109944477081 is 180774449901.

109944477081 is a `hidden beast` number, since 1 + 0 + 9 + 94 + 4 + 477 + 0 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (109944477073) and next prime (109944477089).

It can be written as a sum of positive squares in only one way, i.e., 98508099600 + 11436377481 = 313860^2 + 106941^2 .

It is not a de Polignac number, because 109944477081 - 2³ = 109944477073 is a prime.

It is a super-2 number, since 2×109944477081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109944477089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6108026496 + ... + 6108026513.

It is an arithmetic number, because the mean of its divisors is an integer number (26468114855).

Almost surely, 2^109944477081 is an apocalyptic number.

It is an amenable number.

109944477081 is a deficient number, since it is larger than the sum of its proper divisors (48864212049).

109944477081 is a wasteful number, since it uses less digits than its factorization.

109944477081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12216053015 (or 12216053012 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 109944477081 in words is "one hundred nine billion, nine hundred forty-four million, four hundred seventy-seven thousand, eighty-one".