27770855580 has 144 divisors (see below), whose sum is σ = 96054626304. Its totient is φ = 6433781760.

The previous prime is 27770855579. The next prime is 27770855599. The reversal of 27770855580 is 8555807772.

27770855580 is a `hidden beast` number, since 2 + 7 + 7 + 7 + 0 + 8 + 55 + 580 = 666.

It is a super-3 number, since 3×27770855580³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 309276 + ... + 388835.

It is an arithmetic number, because the mean of its divisors is an integer number (667046016).

Almost surely, 2^27770855580 is an apocalyptic number.

27770855580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27770855580 is an abundant number, since it is smaller than the sum of its proper divisors (68283770724).

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

27770855580 is a wasteful number, since it uses less digits than its factorization.

27770855580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698156 (or 698151 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 54.

The spelling of 27770855580 in words is "twenty-seven billion, seven hundred seventy million, eight hundred fifty-five thousand, five hundred eighty".