27777145754 has 16 divisors (see below), whose sum is σ = 41778270720. Its totient is φ = 13851080880.

The previous prime is 27777145727. The next prime is 27777145813. The reversal of 27777145754 is 45754177772.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27777145754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3291212 + ... + 3299640.

It is an arithmetic number, because the mean of its divisors is an integer number (2611141920).

Almost surely, 2^27777145754 is an apocalyptic number.

27777145754 is a deficient number, since it is larger than the sum of its proper divisors (14001124966).

27777145754 is a wasteful number, since it uses less digits than its factorization.

27777145754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685.

The product of its digits is 13445600, while the sum is 56.

The spelling of 27777145754 in words is "twenty-seven billion, seven hundred seventy-seven million, one hundred forty-five thousand, seven hundred fifty-four".