27456794872 has 32 divisors (see below), whose sum is σ = 55979894880. Its totient is φ = 12549329280.

The previous prime is 27456794867. The next prime is 27456794917. The reversal of 27456794872 is 27849765472.

It is a self number, because there is not a number n which added to its sum of digits gives 27456794872.

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, 1270879 + ... + 1292302.

It is an arithmetic number, because the mean of its divisors is an integer number (1749371715).

Almost surely, 2^27456794872 is an apocalyptic number.

It is an amenable number.

27456794872 is an abundant number, since it is smaller than the sum of its proper divisors (28523100008).

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

27456794872 is a wasteful number, since it uses less digits than its factorization.

27456794872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563303 (or 2563299 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 61.

The spelling of 27456794872 in words is "twenty-seven billion, four hundred fifty-six million, seven hundred ninety-four thousand, eight hundred seventy-two".