11311640250 has 128 divisors (see below), whose sum is σ = 28700904960. Its totient is φ = 2966976000.

The previous prime is 11311640233. The next prime is 11311640299. The reversal of 11311640250 is 5204611311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11311640250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13981846 + ... + 13982654.

It is an arithmetic number, because the mean of its divisors is an integer number (224225820).

Almost surely, 2^11311640250 is an apocalyptic number.

11311640250 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 11311640250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14350452480).

11311640250 is an abundant number, since it is smaller than the sum of its proper divisors (17389264710).

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

11311640250 is a wasteful number, since it uses less digits than its factorization.

11311640250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 11311640250 in words is "eleven billion, three hundred eleven million, six hundred forty thousand, two hundred fifty".