27145880881 has 12 divisors (see below), whose sum is σ = 31590252720. Its totient is φ = 23258767560.

The previous prime is 27145880869. The next prime is 27145880897. The reversal of 27145880881 is 18808854172.

It is not a de Polignac number, because 27145880881 - 2⁹ = 27145880369 is a prime.

It is a super-2 number, since 2×27145880881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27145880831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18966 + ... + 233776.

It is an arithmetic number, because the mean of its divisors is an integer number (2632521060).

Almost surely, 2^27145880881 is an apocalyptic number.

It is an amenable number.

27145880881 is a deficient number, since it is larger than the sum of its proper divisors (4444371839).

27145880881 is a wasteful number, since it uses less digits than its factorization.

27145880881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217404 (or 217397 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 52.

The spelling of 27145880881 in words is "twenty-seven billion, one hundred forty-five million, eight hundred eighty thousand, eight hundred eighty-one".