109179188085 has 64 divisors (see below), whose sum is σ = 191273114880. Its totient is φ = 52739758080.

The previous prime is 109179188071. The next prime is 109179188117. The reversal of 109179188085 is 580881971901.

It is not a de Polignac number, because 109179188085 - 2¹⁴ = 109179171701 is a prime.

It is a super-2 number, since 2×109179188085² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76188529 + ... + 76189961.

It is an arithmetic number, because the mean of its divisors is an integer number (2988642420).

Almost surely, 2^109179188085 is an apocalyptic number.

109179188085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109179188085 is a deficient number, since it is larger than the sum of its proper divisors (82093926795).

109179188085 is a wasteful number, since it uses less digits than its factorization.

109179188085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 1451520, while the sum is 57.

The spelling of 109179188085 in words is "one hundred nine billion, one hundred seventy-nine million, one hundred eighty-eight thousand, eighty-five".