13212842777647 has 2 divisors, whose sum is σ = 13212842777648. Its totient is φ = 13212842777646.

The previous prime is 13212842777627. The next prime is 13212842777677. The reversal of 13212842777647 is 74677724821231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13212842777647 - 2³⁹ = 12663086963759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212842777627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606421388823 + 6606421388824.

It is an arithmetic number, because the mean of its divisors is an integer number (6606421388824).

Almost surely, 2^{13212842777647} is an apocalyptic number.

13212842777647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212842777647 is an equidigital number, since it uses as much as digits as its factorization.

13212842777647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44255232, while the sum is 61.

The spelling of 13212842777647 in words is "thirteen trillion, two hundred twelve billion, eight hundred forty-two million, seven hundred seventy-seven thousand, six hundred forty-seven".