111111611097 has 4 divisors (see below), whose sum is σ = 148148814800. Its totient is φ = 74074407396.

The previous prime is 111111611087. The next prime is 111111611123. The reversal of 111111611097 is 790116111111.

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 not a de Polignac number, because 111111611097 - 2⁶ = 111111611033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111611077) 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, 18518601847 + ... + 18518601852.

It is an arithmetic number, because the mean of its divisors is an integer number (37037203700).

Almost surely, 2^111111611097 is an apocalyptic number.

It is an amenable number.

111111611097 is a deficient number, since it is larger than the sum of its proper divisors (37037203703).

111111611097 is an equidigital number, since it uses as much as digits as its factorization.

111111611097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037203702.

The product of its (nonzero) digits is 378, while the sum is 30.

The spelling of 111111611097 in words is "one hundred eleven billion, one hundred eleven million, six hundred eleven thousand, ninety-seven".