11878250440 has 128 divisors (see below), whose sum is σ = 31311878400. Its totient is φ = 3971404800.

The previous prime is 11878250429. The next prime is 11878250453. The reversal of 11878250440 is 4405287811.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 11878250393 and 11878250402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1891626 + ... + 1897894.

It is an arithmetic number, because the mean of its divisors is an integer number (244624050).

Almost surely, 2^11878250440 is an apocalyptic number.

11878250440 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 11878250440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15655939200).

11878250440 is an abundant number, since it is smaller than the sum of its proper divisors (19433627960).

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

11878250440 is a wasteful number, since it uses less digits than its factorization.

11878250440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455 (or 6451 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 11878250440 in words is "eleven billion, eight hundred seventy-eight million, two hundred fifty thousand, four hundred forty".