11989759228 has 6 divisors (see below), whose sum is σ = 20982078656. Its totient is φ = 5994879612.

The previous prime is 11989759211. The next prime is 11989759241. The reversal of 11989759228 is 82295798911.

It is a super-2 number, since 2×11989759228² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1498719900 + ... + 1498719907.

Almost surely, 2^11989759228 is an apocalyptic number.

It is an amenable number.

11989759228 is a deficient number, since it is larger than the sum of its proper divisors (8992319428).

11989759228 is a wasteful number, since it uses less digits than its factorization.

11989759228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997439811 (or 2997439809 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 61.

The spelling of 11989759228 in words is "eleven billion, nine hundred eighty-nine million, seven hundred fifty-nine thousand, two hundred twenty-eight".