109668158581 has 8 divisors (see below), whose sum is σ = 112201281920. Its totient is φ = 107163658368.

The previous prime is 109668158549. The next prime is 109668158597. The reversal of 109668158581 is 185851866901.

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

It is a cyclic number.

It is not a de Polignac number, because 109668158581 - 2⁵ = 109668158549 is a prime.

It is a super-2 number, since 2×109668158581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109668158381) 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 7 ways as a sum of consecutive naturals, for example, 7148031 + ... + 7163356.

It is an arithmetic number, because the mean of its divisors is an integer number (14025160240).

Almost surely, 2^109668158581 is an apocalyptic number.

It is an amenable number.

109668158581 is a deficient number, since it is larger than the sum of its proper divisors (2533123339).

109668158581 is an equidigital number, since it uses as much as digits as its factorization.

109668158581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311563.

The product of its (nonzero) digits is 4147200, while the sum is 58.

The spelling of 109668158581 in words is "one hundred nine billion, six hundred sixty-eight million, one hundred fifty-eight thousand, five hundred eighty-one".