11855078680 has 32 divisors (see below), whose sum is σ = 26677026000. Its totient is φ = 4741480576.

The previous prime is 11855078663. The next prime is 11855078723. The reversal of 11855078680 is 8687055811.

It is a happy number.

It is a congruent number.

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, 675294 + ... + 692626.

Almost surely, 2^11855078680 is an apocalyptic number.

11855078680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11855078680 is an abundant number, since it is smaller than the sum of its proper divisors (14821947320).

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

11855078680 is a wasteful number, since it uses less digits than its factorization.

11855078680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34443 (or 34439 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 49.

The spelling of 11855078680 in words is "eleven billion, eight hundred fifty-five million, seventy-eight thousand, six hundred eighty".