27487253856 has 48 divisors (see below), whose sum is σ = 72175477248. Its totient is φ = 9159696000.

The previous prime is 27487253837. The next prime is 27487253863. The reversal of 27487253856 is 65835278472.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 27487253796 and 27487253805.

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, 296281 + ... + 377831.

It is an arithmetic number, because the mean of its divisors is an integer number (1503655776).

Almost surely, 2^27487253856 is an apocalyptic number.

It is an amenable number.

27487253856 is an abundant number, since it is smaller than the sum of its proper divisors (44688223392).

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

27487253856 is a wasteful number, since it uses less digits than its factorization.

27487253856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85075 (or 85067 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 57.

The spelling of 27487253856 in words is "twenty-seven billion, four hundred eighty-seven million, two hundred fifty-three thousand, eight hundred fifty-six".