27768543045 has 16 divisors (see below), whose sum is σ = 44434109952. Its totient is φ = 14808409280.

The previous prime is 27768543013. The next prime is 27768543079. The reversal of 27768543045 is 54034586772.

It is a happy number.

It is not a de Polignac number, because 27768543045 - 2⁵ = 27768543013 is a prime.

It is a congruent number.

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, 71980 + ... + 246410.

It is an arithmetic number, because the mean of its divisors is an integer number (2777131872).

Almost surely, 2^27768543045 is an apocalyptic number.

It is an amenable number.

27768543045 is a deficient number, since it is larger than the sum of its proper divisors (16665566907).

27768543045 is a wasteful number, since it uses less digits than its factorization.

27768543045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185052.

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 27768543045 in words is "twenty-seven billion, seven hundred sixty-eight million, five hundred forty-three thousand, forty-five".