27768541461 has 4 divisors (see below), whose sum is σ = 37024721952. Its totient is φ = 18512360972.

The previous prime is 27768541441. The next prime is 27768541483. The reversal of 27768541461 is 16414586772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27768541461 - 2¹⁵ = 27768508693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27768541441) 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, 4628090241 + ... + 4628090246.

It is an arithmetic number, because the mean of its divisors is an integer number (9256180488).

Almost surely, 2^27768541461 is an apocalyptic number.

It is an amenable number.

27768541461 is a deficient number, since it is larger than the sum of its proper divisors (9256180491).

27768541461 is an equidigital number, since it uses as much as digits as its factorization.

27768541461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256180490.

The product of its digits is 2257920, while the sum is 51.

The spelling of 27768541461 in words is "twenty-seven billion, seven hundred sixty-eight million, five hundred forty-one thousand, four hundred sixty-one".