11722818288 has 20 divisors (see below), whose sum is σ = 30283947368. Its totient is φ = 3907606080.

The previous prime is 11722818287. The next prime is 11722818313. The reversal of 11722818288 is 88281822711.

It is a happy number.

It is a super-2 number, since 2×11722818288² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 244225381 = 11722818288 / (1 + 1 + 7 + 2 + 2 + 8 + 1 + 8 + 2 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722818281) 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, 122112643 + ... + 122112738.

Almost surely, 2^11722818288 is an apocalyptic number.

It is an amenable number.

11722818288 is an abundant number, since it is smaller than the sum of its proper divisors (18561129080).

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

11722818288 is a wasteful number, since it uses less digits than its factorization.

11722818288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244225392 (or 244225386 counting only the distinct ones).

The product of its digits is 229376, while the sum is 48.

The spelling of 11722818288 in words is "eleven billion, seven hundred twenty-two million, eight hundred eighteen thousand, two hundred eighty-eight".