109081628591 has 8 divisors (see below), whose sum is σ = 117475089984. Its totient is φ = 100688533920.

The previous prime is 109081628549. The next prime is 109081628599. The reversal of 109081628591 is 195826180901.

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

It is not a de Polignac number, because 109081628591 - 2⁶ = 109081628527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109081628599) 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, 1096826 + ... + 1192136.

It is an arithmetic number, because the mean of its divisors is an integer number (14684386248).

Almost surely, 2^109081628591 is an apocalyptic number.

109081628591 is a deficient number, since it is larger than the sum of its proper divisors (8393461393).

109081628591 is an equidigital number, since it uses as much as digits as its factorization.

109081628591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183361.

The product of its (nonzero) digits is 311040, while the sum is 50.

The spelling of 109081628591 in words is "one hundred nine billion, eighty-one million, six hundred twenty-eight thousand, five hundred ninety-one".