27777673801 has 4 divisors (see below), whose sum is σ = 27830786512. Its totient is φ = 27724561092.

The previous prime is 27777673793. The next prime is 27777673811. The reversal of 27777673801 is 10837677772.

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 27777673801 - 2³ = 27777673793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27777673811) 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, 26555571 + ... + 26556616.

It is an arithmetic number, because the mean of its divisors is an integer number (6957696628).

Almost surely, 2^27777673801 is an apocalyptic number.

It is an amenable number.

27777673801 is a deficient number, since it is larger than the sum of its proper divisors (53112711).

27777673801 is an equidigital number, since it uses as much as digits as its factorization.

27777673801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53112710.

The product of its (nonzero) digits is 4840416, while the sum is 55.

The spelling of 27777673801 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-three thousand, eight hundred one".