111557755111 has 8 divisors (see below), whose sum is σ = 121759432704. Its totient is φ = 101366088120.

The previous prime is 111557755109. The next prime is 111557755139.

111557755111 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111557755111 - 2¹ = 111557755109 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111557755151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2479335 + ... + 2523928.

It is an arithmetic number, because the mean of its divisors is an integer number (15219929088).

Almost surely, 2^111557755111 is an apocalyptic number.

111557755111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111557755111 is a deficient number, since it is larger than the sum of its proper divisors (10201677593).

111557755111 is a wasteful number, since it uses less digits than its factorization.

111557755111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005301.

The product of its digits is 30625, while the sum is 40.

It can be divided in two parts, 111557 and 755111, that added together give a palindrome (866668).

The spelling of 111557755111 in words is "one hundred eleven billion, five hundred fifty-seven million, seven hundred fifty-five thousand, one hundred eleven".