111144430452 has 72 divisors (see below), whose sum is σ = 291121584768. Its totient is φ = 32963511680.

The previous prime is 111144430433. The next prime is 111144430519. The reversal of 111144430452 is 254034441111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 746073 + ... + 882560.

It is an arithmetic number, because the mean of its divisors is an integer number (4043355344).

Almost surely, 2^111144430452 is an apocalyptic number.

111144430452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111144430452 is an abundant number, since it is smaller than the sum of its proper divisors (179977154316).

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

111144430452 is a wasteful number, since it uses less digits than its factorization.

111144430452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628709 (or 1628696 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 111144430452 its reverse (254034441111), we get a palindrome (365178871563).

The spelling of 111144430452 in words is "one hundred eleven billion, one hundred forty-four million, four hundred thirty thousand, four hundred fifty-two".