27434777047 has 2 divisors, whose sum is σ = 27434777048. Its totient is φ = 27434777046.

The previous prime is 27434777003. The next prime is 27434777063. The reversal of 27434777047 is 74077743472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27434777047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27434776985 and 27434777003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27434777347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13717388523 + 13717388524.

It is an arithmetic number, because the mean of its divisors is an integer number (13717388524).

Almost surely, 2^27434777047 is an apocalyptic number.

27434777047 is a deficient number, since it is larger than the sum of its proper divisors (1).

27434777047 is an equidigital number, since it uses as much as digits as its factorization.

27434777047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6453888, while the sum is 52.

The spelling of 27434777047 in words is "twenty-seven billion, four hundred thirty-four million, seven hundred seventy-seven thousand, forty-seven".