27977867341 has 4 divisors (see below), whose sum is σ = 28058033500. Its totient is φ = 27897701184.

The previous prime is 27977867293. The next prime is 27977867377. The reversal of 27977867341 is 14376877972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18245255625 + 9732611716 = 135075^2 + 98654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27977867341 is a prime.

It is a super-2 number, since 2×27977867341² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27977867341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27977867641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40082556 + ... + 40083253.

It is an arithmetic number, because the mean of its divisors is an integer number (7014508375).

Almost surely, 2^27977867341 is an apocalyptic number.

It is an amenable number.

27977867341 is a deficient number, since it is larger than the sum of its proper divisors (80166159).

27977867341 is an equidigital number, since it uses as much as digits as its factorization.

27977867341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80166158.

The product of its digits is 24893568, while the sum is 61.

The spelling of 27977867341 in words is "twenty-seven billion, nine hundred seventy-seven million, eight hundred sixty-seven thousand, three hundred forty-one".