109661050109 has 8 divisors (see below), whose sum is σ = 122168809560. Its totient is φ = 97735046976.

The previous prime is 109661050073. The next prime is 109661050141. The reversal of 109661050109 is 901050166901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 727609 + 109660322500 = 853^2 + 331150^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109661050109 is a prime.

It is a super-2 number, since 2×109661050109² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109661050909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145438682 + ... + 145439435.

It is an arithmetic number, because the mean of its divisors is an integer number (15271101195).

Almost surely, 2^109661050109 is an apocalyptic number.

It is an amenable number.

109661050109 is a deficient number, since it is larger than the sum of its proper divisors (12507759451).

109661050109 is a wasteful number, since it uses less digits than its factorization.

109661050109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290878159.

The product of its (nonzero) digits is 14580, while the sum is 38.

The spelling of 109661050109 in words is "one hundred nine billion, six hundred sixty-one million, fifty thousand, one hundred nine".