27540001555 has 16 divisors (see below), whose sum is σ = 36931694688. Its totient is φ = 19540576000.

The previous prime is 27540001537. The next prime is 27540001571. The reversal of 27540001555 is 55510004572.

It is not a de Polignac number, because 27540001555 - 2¹³ = 27539993363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27540001555.

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, 6104176 + ... + 6108685.

It is an arithmetic number, because the mean of its divisors is an integer number (2308230918).

Almost surely, 2^27540001555 is an apocalyptic number.

27540001555 is a deficient number, since it is larger than the sum of its proper divisors (9391693133).

27540001555 is a wasteful number, since it uses less digits than its factorization.

27540001555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12212918.

The product of its (nonzero) digits is 35000, while the sum is 34.

The spelling of 27540001555 in words is "twenty-seven billion, five hundred forty million, one thousand, five hundred fifty-five".