27802565538045 has 64 divisors (see below), whose sum is σ = 48362419249920. Its totient is φ = 13593760008192.

The previous prime is 27802565538043. The next prime is 27802565538047. The reversal of 27802565538045 is 54083556520872.

It is an interprime number because it is at equal distance from previous prime (27802565538043) and next prime (27802565538047).

It is not a de Polignac number, because 27802565538045 - 2¹ = 27802565538043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27802565538045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27802565538043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11504322 + ... + 13709651.

It is an arithmetic number, because the mean of its divisors is an integer number (755662800780).

Almost surely, 2^{27802565538045} is an apocalyptic number.

It is an amenable number.

27802565538045 is a deficient number, since it is larger than the sum of its proper divisors (20559853711875).

27802565538045 is a wasteful number, since it uses less digits than its factorization.

27802565538045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25214126.

The product of its (nonzero) digits is 80640000, while the sum is 60.

The spelling of 27802565538045 in words is "twenty-seven trillion, eight hundred two billion, five hundred sixty-five million, five hundred thirty-eight thousand, forty-five".