11939774220 has 360 divisors, whose sum is σ = 43604047872. Its totient is φ = 2723466240.

The previous prime is 11939774213. The next prime is 11939774261. The reversal of 11939774220 is 2247793911.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 119 ways as a sum of consecutive naturals, for example, 3330549 + ... + 3334131.

Almost surely, 2^11939774220 is an apocalyptic number.

11939774220 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 11939774220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21802023936).

11939774220 is an abundant number, since it is smaller than the sum of its proper divisors (31664273652).

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

11939774220 is a wasteful number, since it uses less digits than its factorization.

11939774220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 11939774220 in words is "eleven billion, nine hundred thirty-nine million, seven hundred seventy-four thousand, two hundred twenty".