27780330500 has 96 divisors (see below), whose sum is σ = 65515806720. Its totient is φ = 10229654400.

The previous prime is 27780330497. The next prime is 27780330503. The reversal of 27780330500 is 503308772.

It is an interprime number because it is at equal distance from previous prime (27780330497) and next prime (27780330503).

It is not an unprimeable number, because it can be changed into a prime (27780330503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2483921 + ... + 2495079.

It is an arithmetic number, because the mean of its divisors is an integer number (682456320).

Almost surely, 2^27780330500 is an apocalyptic number.

27780330500 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 27780330500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32757903360).

27780330500 is an abundant number, since it is smaller than the sum of its proper divisors (37735476220).

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

27780330500 is a wasteful number, since it uses less digits than its factorization.

27780330500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11574 (or 11562 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 27780330500 in words is "twenty-seven billion, seven hundred eighty million, three hundred thirty thousand, five hundred".