11988290508 has 24 divisors (see below), whose sum is σ = 28186213440. Its totient is φ = 3965591760.

The previous prime is 11988290491. The next prime is 11988290513. The reversal of 11988290508 is 80509288911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3811498 + ... + 3814641.

It is an arithmetic number, because the mean of its divisors is an integer number (1174425560).

Almost surely, 2^11988290508 is an apocalyptic number.

It is an amenable number.

11988290508 is an abundant number, since it is smaller than the sum of its proper divisors (16197922932).

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

11988290508 is a wasteful number, since it uses less digits than its factorization.

11988290508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626277 (or 7626275 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 51.

The spelling of 11988290508 in words is "eleven billion, nine hundred eighty-eight million, two hundred ninety thousand, five hundred eight".