27454972547 has 2 divisors, whose sum is σ = 27454972548. Its totient is φ = 27454972546.

The previous prime is 27454972513. The next prime is 27454972553. The reversal of 27454972547 is 74527945472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27454972547 - 2¹² = 27454968451 is a prime.

It is a super-3 number, since 3×27454972547³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27454972492 and 27454972501.

It is not a weakly prime, because it can be changed into another prime (27454971547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13727486273 + 13727486274.

It is an arithmetic number, because the mean of its divisors is an integer number (13727486274).

Almost surely, 2^27454972547 is an apocalyptic number.

27454972547 is a deficient number, since it is larger than the sum of its proper divisors (1).

27454972547 is an equidigital number, since it uses as much as digits as its factorization.

27454972547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19756800, while the sum is 56.

It can be divided in two parts, 27454 and 972547, that added together give a palindrome (1000001).

The spelling of 27454972547 in words is "twenty-seven billion, four hundred fifty-four million, nine hundred seventy-two thousand, five hundred forty-seven".