27777613142 has 4 divisors (see below), whose sum is σ = 41666419716.
Its totient is φ = 13888806570.
The previous prime is 27777613139. The next prime is 27777613151. The reversal of 27777613142 is 24131677772.
It is a semiprime because it is the product of two primes.
It is a super-2 number, since 2×277776131422 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944403284 + ... + 6944403287.
It is an arithmetic number, because the mean of its divisors is an integer number (10416604929).
Almost surely, 227777613142 is an apocalyptic number.
27777613142 is a deficient number, since it is larger than the sum of its proper divisors (13888806574).
27777613142 is a wasteful number, since it uses less digits than its factorization.
27777613142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13888806573.
The product of its digits is 691488, while the sum is 47.
The spelling of 27777613142 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred thirteen thousand, one hundred forty-two".