27858873764 has 6 divisors (see below), whose sum is σ = 48753029094. Its totient is φ = 13929436880.

The previous prime is 27858873703. The next prime is 27858873769. The reversal of 27858873764 is 46737885872.

It can be written as a sum of positive squares in only one way, i.e., 27162336100 + 696537664 = 164810^2 + 26392^2 .

It is a super-3 number, since 3×27858873764³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 27858873764.

It is not an unprimeable number, because it can be changed into a prime (27858873769) 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 as a sum of consecutive naturals, namely, 3482359217 + ... + 3482359224.

It is an arithmetic number, because the mean of its divisors is an integer number (8125504849).

Almost surely, 2^27858873764 is an apocalyptic number.

It is an amenable number.

27858873764 is a deficient number, since it is larger than the sum of its proper divisors (20894155330).

27858873764 is a wasteful number, since it uses less digits than its factorization.

27858873764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964718445 (or 6964718443 counting only the distinct ones).

The product of its digits is 126443520, while the sum is 65.

The spelling of 27858873764 in words is "twenty-seven billion, eight hundred fifty-eight million, eight hundred seventy-three thousand, seven hundred sixty-four".