11331855580 has 48 divisors (see below), whose sum is σ = 25479891360. Its totient is φ = 4218165248.

The previous prime is 11331855559. The next prime is 11331855593. The reversal of 11331855580 is 8555813311.

It is a super-3 number, since 3×11331855580³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156982 + ... + 217501.

It is an arithmetic number, because the mean of its divisors is an integer number (530831070).

Almost surely, 2^11331855580 is an apocalyptic number.

11331855580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331855580 is an abundant number, since it is smaller than the sum of its proper divisors (14148035780).

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

11331855580 is a wasteful number, since it uses less digits than its factorization.

11331855580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374598 (or 374596 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 11331855580 in words is "eleven billion, three hundred thirty-one million, eight hundred fifty-five thousand, five hundred eighty".