11639652220 has 24 divisors (see below), whose sum is σ = 27935165664. Its totient is φ = 3990737856.

The previous prime is 11639652209. The next prime is 11639652223. The reversal of 11639652220 is 2225693611.

It is a self number, because there is not a number n which added to its sum of digits gives 11639652220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11639652223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41570047 + ... + 41570326.

It is an arithmetic number, because the mean of its divisors is an integer number (1163965236).

Almost surely, 2^11639652220 is an apocalyptic number.

11639652220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11639652220 is an abundant number, since it is smaller than the sum of its proper divisors (16295513444).

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

11639652220 is a wasteful number, since it uses less digits than its factorization.

11639652220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83140389 (or 83140387 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 11639652220 in words is "eleven billion, six hundred thirty-nine million, six hundred fifty-two thousand, two hundred twenty".