11801311050 has 24 divisors (see below), whose sum is σ = 29267251776. Its totient is φ = 3147016240.

The previous prime is 11801311037. The next prime is 11801311051. The reversal of 11801311050 is 5011310811.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11801311051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39337554 + ... + 39337853.

It is an arithmetic number, because the mean of its divisors is an integer number (1219468824).

Almost surely, 2^11801311050 is an apocalyptic number.

11801311050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11801311050 is an abundant number, since it is smaller than the sum of its proper divisors (17465940726).

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

11801311050 is a wasteful number, since it uses less digits than its factorization.

11801311050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78675422 (or 78675417 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 21.

Adding to 11801311050 its reverse (5011310811), we get a palindrome (16812621861).

The spelling of 11801311050 in words is "eleven billion, eight hundred one million, three hundred eleven thousand, fifty".