27865056872 has 16 divisors (see below), whose sum is σ = 52358866560. Its totient is φ = 13902692464.

The previous prime is 27865056851. The next prime is 27865056931.

It is a happy number.

27865056872 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×27865056872² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3725528 + ... + 3732999.

It is an arithmetic number, because the mean of its divisors is an integer number (3272429160).

Almost surely, 2^27865056872 is an apocalyptic number.

It is an amenable number.

27865056872 is a deficient number, since it is larger than the sum of its proper divisors (24493809688).

27865056872 is a wasteful number, since it uses less digits than its factorization.

27865056872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459000 (or 7458996 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 27865056872 in words is "twenty-seven billion, eight hundred sixty-five million, fifty-six thousand, eight hundred seventy-two".