11772550440 has 96 divisors (see below), whose sum is σ = 43726625280. Its totient is φ = 2690868096.

The previous prime is 11772550417. The next prime is 11772550451. The reversal of 11772550440 is 4405527711.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11772550395 and 11772550404.

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 23 ways as a sum of consecutive naturals, for example, 2333304 + ... + 2338343.

It is an arithmetic number, because the mean of its divisors is an integer number (455485680).

Almost surely, 2^11772550440 is an apocalyptic number.

11772550440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11772550440 is an abundant number, since it is smaller than the sum of its proper divisors (31954074840).

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

11772550440 is a wasteful number, since it uses less digits than its factorization.

11772550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671671 (or 4671664 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The spelling of 11772550440 in words is "eleven billion, seven hundred seventy-two million, five hundred fifty thousand, four hundred forty".