27805505504 has 36 divisors (see below), whose sum is σ = 63679576464. Its totient is φ = 11916644544.

The previous prime is 27805505471. The next prime is 27805505543. The reversal of 27805505504 is 40550550872.

It is a super-2 number, since 2×27805505504² (a number of 22 digits) contains 22 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8864984 + ... + 8868119.

It is an arithmetic number, because the mean of its divisors is an integer number (1768877124).

Almost surely, 2^27805505504 is an apocalyptic number.

It is an amenable number.

27805505504 is an abundant number, since it is smaller than the sum of its proper divisors (35874070960).

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

27805505504 is a wasteful number, since it uses less digits than its factorization.

27805505504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17733127 (or 17733112 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 27805505504 in words is "twenty-seven billion, eight hundred five million, five hundred five thousand, five hundred four".