27646926479 has 2 divisors, whose sum is σ = 27646926480. Its totient is φ = 27646926478.

The previous prime is 27646926401. The next prime is 27646926491. The reversal of 27646926479 is 97462964672.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27646926479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27646926499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13823463239 + 13823463240.

It is an arithmetic number, because the mean of its divisors is an integer number (13823463240).

Almost surely, 2^27646926479 is an apocalyptic number.

27646926479 is a deficient number, since it is larger than the sum of its proper divisors (1).

27646926479 is an equidigital number, since it uses as much as digits as its factorization.

27646926479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 62.

The spelling of 27646926479 in words is "twenty-seven billion, six hundred forty-six million, nine hundred twenty-six thousand, four hundred seventy-nine".