11681177080 has 32 divisors (see below), whose sum is σ = 26400528000. Its totient is φ = 4651514496.

The previous prime is 11681177047. The next prime is 11681177099. The reversal of 11681177080 is 8077118611.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 645855 + ... + 663694.

It is an arithmetic number, because the mean of its divisors is an integer number (825016500).

Almost surely, 2^11681177080 is an apocalyptic number.

11681177080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11681177080 is an abundant number, since it is smaller than the sum of its proper divisors (14719350920).

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

11681177080 is a wasteful number, since it uses less digits than its factorization.

11681177080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309783 (or 1309779 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 40.

The spelling of 11681177080 in words is "eleven billion, six hundred eighty-one million, one hundred seventy-seven thousand, eighty".