11806773220 has 24 divisors (see below), whose sum is σ = 27048244608. Its totient is φ = 4293372000.

The previous prime is 11806773217. The next prime is 11806773221. The reversal of 11806773220 is 2237760811.

It is a self number, because there is not a number n which added to its sum of digits gives 11806773220.

It is not an unprimeable number, because it can be changed into a prime (11806773221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26833356 + ... + 26833795.

It is an arithmetic number, because the mean of its divisors is an integer number (1127010192).

Almost surely, 2^11806773220 is an apocalyptic number.

11806773220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11806773220 is an abundant number, since it is smaller than the sum of its proper divisors (15241471388).

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

11806773220 is a wasteful number, since it uses less digits than its factorization.

11806773220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53667171 (or 53667169 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 11806773220 in words is "eleven billion, eight hundred six million, seven hundred seventy-three thousand, two hundred twenty".