111144400989 has 8 divisors (see below), whose sum is σ = 148205379360. Its totient is φ = 74089844976.

The previous prime is 111144400951. The next prime is 111144401041. The reversal of 111144400989 is 989004441111.

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

It is not a de Polignac number, because 111144400989 - 2⁸ = 111144400733 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111144400989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111144400949) 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, 1565062 + ... + 1634535.

It is an arithmetic number, because the mean of its divisors is an integer number (18525672420).

Almost surely, 2^111144400989 is an apocalyptic number.

It is an amenable number.

111144400989 is a deficient number, since it is larger than the sum of its proper divisors (37060978371).

111144400989 is a wasteful number, since it uses less digits than its factorization.

111144400989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211179.

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 111144400989 in words is "one hundred eleven billion, one hundred forty-four million, four hundred thousand, nine hundred eighty-nine".