27909534885 has 16 divisors (see below), whose sum is σ = 44664132480. Its totient is φ = 14882126400.

The previous prime is 27909534869. The next prime is 27909534973. The reversal of 27909534885 is 58843590972.

It is not a de Polignac number, because 27909534885 - 2⁴ = 27909534869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105865 + ... + 258894.

It is an arithmetic number, because the mean of its divisors is an integer number (2791508280).

Almost surely, 2^27909534885 is an apocalyptic number.

It is an amenable number.

27909534885 is a deficient number, since it is larger than the sum of its proper divisors (16754597595).

27909534885 is a wasteful number, since it uses less digits than its factorization.

27909534885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369868.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 27909534885 in words is "twenty-seven billion, nine hundred nine million, five hundred thirty-four thousand, eight hundred eighty-five".