1138874240550 has 96 divisors (see below), whose sum is σ = 2839115784960. Its totient is φ = 302122230400.

The previous prime is 1138874240549. The next prime is 1138874240563. The reversal of 1138874240550 is 550424788311.

It is a self number, because there is not a number n which added to its sum of digits gives 1138874240550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23720869 + ... + 23768831.

It is an arithmetic number, because the mean of its divisors is an integer number (29574122760).

Almost surely, 2^{1138874240550} is an apocalyptic number.

1138874240550 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 1138874240550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419557892480).

1138874240550 is an abundant number, since it is smaller than the sum of its proper divisors (1700241544410).

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

1138874240550 is a wasteful number, since it uses less digits than its factorization.

1138874240550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48798 (or 48793 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 1138874240550 in words is "one trillion, one hundred thirty-eight billion, eight hundred seventy-four million, two hundred forty thousand, five hundred fifty".