111111504354 has 64 divisors (see below), whose sum is σ = 250814638080. Its totient is φ = 36453090960.

The previous prime is 111111504299. The next prime is 111111504407. The reversal of 111111504354 is 453405111111.

It is a happy number.

111111504354 is a `hidden beast` number, since 1 + 11 + 111 + 504 + 35 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4412259 + ... + 4437369.

It is an arithmetic number, because the mean of its divisors is an integer number (3918978720).

Almost surely, 2^111111504354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111111504354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125407319040).

111111504354 is an abundant number, since it is smaller than the sum of its proper divisors (139703133726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111111504354 is a wasteful number, since it uses less digits than its factorization.

111111504354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26412 (or 26406 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 111111504354 its reverse (453405111111), we get a palindrome (564516615465).

The spelling of 111111504354 in words is "one hundred eleven billion, one hundred eleven million, five hundred four thousand, three hundred fifty-four".