12347884477 has 2 divisors, whose sum is σ = 12347884478. Its totient is φ = 12347884476.

The previous prime is 12347884469. The next prime is 12347884487. The reversal of 12347884477 is 77448874321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7422511716 + 4925372761 = 86154^2 + 70181^2 .

It is a cyclic number.

It is not a de Polignac number, because 12347884477 - 2³ = 12347884469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12347884487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173942238 + 6173942239.

It is an arithmetic number, because the mean of its divisors is an integer number (6173942239).

Almost surely, 2^12347884477 is an apocalyptic number.

It is an amenable number.

12347884477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347884477 is an equidigital number, since it uses as much as digits as its factorization.

12347884477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8429568, while the sum is 55.

The spelling of 12347884477 in words is "twelve billion, three hundred forty-seven million, eight hundred eighty-four thousand, four hundred seventy-seven".