27897008685 has 64 divisors (see below), whose sum is σ = 57827051520. Its totient is φ = 11152339200.

The previous prime is 27897008677. The next prime is 27897008701. The reversal of 27897008685 is 58680079872.

It is not a de Polignac number, because 27897008685 - 2³ = 27897008677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 511891 + ... + 563760.

It is an arithmetic number, because the mean of its divisors is an integer number (903547680).

Almost surely, 2^27897008685 is an apocalyptic number.

It is an amenable number.

27897008685 is an abundant number, since it is smaller than the sum of its proper divisors (29930042835).

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

27897008685 is a wasteful number, since it uses less digits than its factorization.

27897008685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075698.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 27897008685 in words is "twenty-seven billion, eight hundred ninety-seven million, eight thousand, six hundred eighty-five".