109456294891 has 4 divisors (see below), whose sum is σ = 110061025984. Its totient is φ = 108851563800.

The previous prime is 109456294879. The next prime is 109456294919. The reversal of 109456294891 is 198492654901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198492654901 = 119627 ⋅1659263.

It is a cyclic number.

It is not a de Polignac number, because 109456294891 - 2⁵ = 109456294859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109456264891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302365275 + ... + 302365636.

It is an arithmetic number, because the mean of its divisors is an integer number (27515256496).

Almost surely, 2^109456294891 is an apocalyptic number.

109456294891 is a deficient number, since it is larger than the sum of its proper divisors (604731093).

109456294891 is an equidigital number, since it uses as much as digits as its factorization.

109456294891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604731092.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 109456294891 in words is "one hundred nine billion, four hundred fifty-six million, two hundred ninety-four thousand, eight hundred ninety-one".