111819839040 has 560 divisors, whose sum is σ = 489564590592. Its totient is φ = 23592259584.

The previous prime is 111819839003. The next prime is 111819839083. The reversal of 111819839040 is 40938918111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2335017 + ... + 2382423.

Almost surely, 2^111819839040 is an apocalyptic number.

111819839040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111819839040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244782295296).

111819839040 is an abundant number, since it is smaller than the sum of its proper divisors (377744751552).

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

111819839040 is a wasteful number, since it uses less digits than its factorization.

111819839040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47456 (or 47437 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 111819839040 in words is "one hundred eleven billion, eight hundred nineteen million, eight hundred thirty-nine thousand, forty".