27155012603 has 16 divisors (see below), whose sum is σ = 27913433856. Its totient is φ = 26402634720.

The previous prime is 27155012581. The next prime is 27155012653. The reversal of 27155012603 is 30621055172.

It is a cyclic number.

It is not a de Polignac number, because 27155012603 - 2³⁴ = 9975143419 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 27155012603.

It is not an unprimeable number, because it can be changed into a prime (27155012653) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13762325 + ... + 13764297.

It is an arithmetic number, because the mean of its divisors is an integer number (1744589616).

Almost surely, 2^27155012603 is an apocalyptic number.

27155012603 is a deficient number, since it is larger than the sum of its proper divisors (758421253).

27155012603 is a wasteful number, since it uses less digits than its factorization.

27155012603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 27155012603 its reverse (30621055172), we get a palindrome (57776067775).

The spelling of 27155012603 in words is "twenty-seven billion, one hundred fifty-five million, twelve thousand, six hundred three".