27540853540 has 12 divisors (see below), whose sum is σ = 57835792476. Its totient is φ = 11016341408.

The previous prime is 27540853531. The next prime is 27540853547. The reversal of 27540853540 is 4535804572.

It can be written as a sum of positive squares in 2 ways, for example, as 8015262784 + 19525590756 = 89528^2 + 139734^2 .

It is a super-2 number, since 2×27540853540² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27540853547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688521319 + ... + 688521358.

It is an arithmetic number, because the mean of its divisors is an integer number (4819649373).

Almost surely, 2^27540853540 is an apocalyptic number.

27540853540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27540853540 is an abundant number, since it is smaller than the sum of its proper divisors (30294938936).

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

27540853540 is a wasteful number, since it uses less digits than its factorization.

27540853540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377042686 (or 1377042684 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 27540853540 in words is "twenty-seven billion, five hundred forty million, eight hundred fifty-three thousand, five hundred forty".