11109851097 has 4 divisors (see below), whose sum is σ = 14813134800. Its totient is φ = 7406567396.

The previous prime is 11109851089. The next prime is 11109851111. The reversal of 11109851097 is 79015890111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11109851097 - 2³ = 11109851089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11109851087) 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, 1851641847 + ... + 1851641852.

It is an arithmetic number, because the mean of its divisors is an integer number (3703283700).

Almost surely, 2^11109851097 is an apocalyptic number.

It is an amenable number.

11109851097 is a deficient number, since it is larger than the sum of its proper divisors (3703283703).

11109851097 is an equidigital number, since it uses as much as digits as its factorization.

11109851097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703283702.

The product of its (nonzero) digits is 22680, while the sum is 42.

The spelling of 11109851097 in words is "eleven billion, one hundred nine million, eight hundred fifty-one thousand, ninety-seven".