27189894880 has 48 divisors (see below), whose sum is σ = 64872166464. Its totient is φ = 10768268800.

The previous prime is 27189894833. The next prime is 27189894899. The reversal of 27189894880 is 8849898172.

It is a super-5 number, since 5×27189894880⁵ (a number of 53 digits) contains 55555 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 7 ways as a sum of consecutive naturals, for example, 825112 + ... + 857431.

It is an arithmetic number, because the mean of its divisors is an integer number (1351503468).

Almost surely, 2^27189894880 is an apocalyptic number.

27189894880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27189894880 is an abundant number, since it is smaller than the sum of its proper divisors (37682271584).

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

27189894880 is a wasteful number, since it uses less digits than its factorization.

27189894880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682659 (or 1682651 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 64.

The spelling of 27189894880 in words is "twenty-seven billion, one hundred eighty-nine million, eight hundred ninety-four thousand, eight hundred eighty".