27765190180 has 96 divisors (see below), whose sum is σ = 71811903744. Its totient is φ = 8781156864.

The previous prime is 27765190147. The next prime is 27765190199. The reversal of 27765190180 is 8109156772.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27765190180.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3149659 + ... + 3158461.

It is an arithmetic number, because the mean of its divisors is an integer number (748040664).

Almost surely, 2^27765190180 is an apocalyptic number.

27765190180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27765190180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35905951872).

27765190180 is an abundant number, since it is smaller than the sum of its proper divisors (44046713564).

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

27765190180 is a wasteful number, since it uses less digits than its factorization.

27765190180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10565 (or 10563 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 27765190180 in words is "twenty-seven billion, seven hundred sixty-five million, one hundred ninety thousand, one hundred eighty".