27456794865 has 24 divisors (see below), whose sum is σ = 47600399808. Its totient is φ = 14640971040.

The previous prime is 27456794861. The next prime is 27456794867. The reversal of 27456794865 is 56849765472.

27456794865 is a `hidden beast` number, since 2 + 7 + 4 + 567 + 9 + 4 + 8 + 65 = 666.

It is not a de Polignac number, because 27456794865 - 2² = 27456794861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27456794861) 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 23 ways as a sum of consecutive naturals, for example, 209860 + ... + 314570.

It is an arithmetic number, because the mean of its divisors is an integer number (1983349992).

Almost surely, 2^27456794865 is an apocalyptic number.

It is an amenable number.

27456794865 is a deficient number, since it is larger than the sum of its proper divisors (20143604943).

27456794865 is a wasteful number, since it uses less digits than its factorization.

27456794865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110549 (or 110546 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 27456794865 in words is "twenty-seven billion, four hundred fifty-six million, seven hundred ninety-four thousand, eight hundred sixty-five".