109561866755 has 16 divisors (see below), whose sum is σ = 144021591648. Its totient is φ = 79350720000.

The previous prime is 109561866751. The next prime is 109561866793. The reversal of 109561866755 is 557668165901.

It is a happy number.

It is not a de Polignac number, because 109561866755 - 2² = 109561866751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109561866694 and 109561866703.

It is not an unprimeable number, because it can be changed into a prime (109561866751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4119596 + ... + 4146105.

It is an arithmetic number, because the mean of its divisors is an integer number (9001349478).

Almost surely, 2^109561866755 is an apocalyptic number.

109561866755 is a deficient number, since it is larger than the sum of its proper divisors (34459724893).

109561866755 is a wasteful number, since it uses less digits than its factorization.

109561866755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265958.

The product of its (nonzero) digits is 13608000, while the sum is 59.

The spelling of 109561866755 in words is "one hundred nine billion, five hundred sixty-one million, eight hundred sixty-six thousand, seven hundred fifty-five".