11751727220 has 12 divisors (see below), whose sum is σ = 24678627204. Its totient is φ = 4700690880.

The previous prime is 11751727201. The next prime is 11751727223. The reversal of 11751727220 is 2272715711.

It can be written as a sum of positive squares in 2 ways, for example, as 5159261584 + 6592465636 = 71828^2 + 81194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11751727223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293793161 + ... + 293793200.

It is an arithmetic number, because the mean of its divisors is an integer number (2056552267).

Almost surely, 2^11751727220 is an apocalyptic number.

11751727220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11751727220 is an abundant number, since it is smaller than the sum of its proper divisors (12926899984).

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

11751727220 is a wasteful number, since it uses less digits than its factorization.

11751727220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587586370 (or 587586368 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 35.

The spelling of 11751727220 in words is "eleven billion, seven hundred fifty-one million, seven hundred twenty-seven thousand, two hundred twenty".