111142454191 has 16 divisors (see below), whose sum is σ = 125652536064. Its totient is φ = 97729720704.

The previous prime is 111142454177. The next prime is 111142454221. The reversal of 111142454191 is 191454241111.

It is a cyclic number.

It is not a de Polignac number, because 111142454191 - 2¹⁷ = 111142323119 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 (111142454491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288441 + ... + 3322066.

It is an arithmetic number, because the mean of its divisors is an integer number (7853283504).

Almost surely, 2^111142454191 is an apocalyptic number.

111142454191 is a deficient number, since it is larger than the sum of its proper divisors (14510081873).

111142454191 is a wasteful number, since it uses less digits than its factorization.

111142454191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610590.

The product of its digits is 5760, while the sum is 34.

The spelling of 111142454191 in words is "one hundred eleven billion, one hundred forty-two million, four hundred fifty-four thousand, one hundred ninety-one".