27805005030555 has 12 divisors (see below), whose sum is σ = 48195342053040. Its totient is φ = 14829336016272.

The previous prime is 27805005030497. The next prime is 27805005030559. The reversal of 27805005030555 is 55503050050872.

It is not a de Polignac number, because 27805005030555 - 2²¹ = 27805002933403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 617889000679 = 27805005030555 / (2 + 7 + 8 + 0 + 5 + 0 + 0 + 5 + 0 + 3 + 0 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 27805005030555.

It is not an unprimeable number, because it can be changed into a prime (27805005030559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308944500295 + ... + 308944500384.

It is an arithmetic number, because the mean of its divisors is an integer number (4016278504420).

Almost surely, 2^{27805005030555} is an apocalyptic number.

27805005030555 is a deficient number, since it is larger than the sum of its proper divisors (20390337022485).

27805005030555 is a wasteful number, since it uses less digits than its factorization.

27805005030555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617889000690 (or 617889000687 counting only the distinct ones).

The product of its (nonzero) digits is 1050000, while the sum is 45.

The spelling of 27805005030555 in words is "twenty-seven trillion, eight hundred five billion, five million, thirty thousand, five hundred fifty-five".