27777294047 has 2 divisors, whose sum is σ = 27777294048. Its totient is φ = 27777294046.

The previous prime is 27777294031. The next prime is 27777294059. The reversal of 27777294047 is 74049277772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27777294047 - 2⁴ = 27777294031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27777293983 and 27777294001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27777294067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888647023 + 13888647024.

It is an arithmetic number, because the mean of its divisors is an integer number (13888647024).

Almost surely, 2^27777294047 is an apocalyptic number.

27777294047 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777294047 is an equidigital number, since it uses as much as digits as its factorization.

27777294047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9680832, while the sum is 56.

The spelling of 27777294047 in words is "twenty-seven billion, seven hundred seventy-seven million, two hundred ninety-four thousand, forty-seven".