1113239578440 has 512 divisors, whose sum is σ = 3939715584000. Its totient is φ = 248732467200.

The previous prime is 1113239578439. The next prime is 1113239578463. The reversal of 1113239578440 is 448759323111.

It is a self number, because there is not a number n which added to its sum of digits gives 1113239578440.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 420565197 + ... + 420567843.

It is an arithmetic number, because the mean of its divisors is an integer number (7694757000).

Almost surely, 2^{1113239578440} is an apocalyptic number.

1113239578440 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 1113239578440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969857792000).

1113239578440 is an abundant number, since it is smaller than the sum of its proper divisors (2826476005560).

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

1113239578440 is a wasteful number, since it uses less digits than its factorization.

1113239578440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141 (or 3137 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 1113239578440 in words is "one trillion, one hundred thirteen billion, two hundred thirty-nine million, five hundred seventy-eight thousand, four hundred forty".