109433007891 has 6 divisors (see below), whose sum is σ = 158069900300. Its totient is φ = 72955338588.

The previous prime is 109433007877. The next prime is 109433007907. The reversal of 109433007891 is 198700334901.

It is not a de Polignac number, because 109433007891 - 2⁷ = 109433007763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109433007811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6079611541 + ... + 6079611558.

Almost surely, 2^109433007891 is an apocalyptic number.

109433007891 is a deficient number, since it is larger than the sum of its proper divisors (48636892409).

109433007891 is a wasteful number, since it uses less digits than its factorization.

109433007891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12159223105 (or 12159223102 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 109433007891 in words is "one hundred nine billion, four hundred thirty-three million, seven thousand, eight hundred ninety-one".