111540255450 has 96 divisors (see below), whose sum is σ = 298016509056. Its totient is φ = 27445167360.

The previous prime is 111540255391. The next prime is 111540255457. The reversal of 111540255450 is 54552045111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111540255457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5619744 + ... + 5639556.

It is an arithmetic number, because the mean of its divisors is an integer number (3104338636).

Almost surely, 2^111540255450 is an apocalyptic number.

111540255450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111540255450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149008254528).

111540255450 is an abundant number, since it is smaller than the sum of its proper divisors (186476253606).

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

111540255450 is a wasteful number, since it uses less digits than its factorization.

111540255450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22728 (or 22723 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 111540255450 in words is "one hundred eleven billion, five hundred forty million, two hundred fifty-five thousand, four hundred fifty".