11683647220 has 36 divisors (see below), whose sum is σ = 28541483460. Its totient is φ = 4005821568.

The previous prime is 11683647193. The next prime is 11683647229. The reversal of 11683647220 is 2274638611.

It can be written as a sum of positive squares in 2 ways, for example, as 1539934564 + 10143712656 = 39242^2 + 100716^2 .

It is a super-2 number, since 2×11683647220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11683647229) 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, 5960065 + ... + 5962024.

It is an arithmetic number, because the mean of its divisors is an integer number (792818985).

Almost surely, 2^11683647220 is an apocalyptic number.

11683647220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11683647220 is an abundant number, since it is smaller than the sum of its proper divisors (16857836240).

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

11683647220 is a wasteful number, since it uses less digits than its factorization.

11683647220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11922112 (or 11922103 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 11683647220 in words is "eleven billion, six hundred eighty-three million, six hundred forty-seven thousand, two hundred twenty".