12571363477 has 2 divisors, whose sum is σ = 12571363478. Its totient is φ = 12571363476.

The previous prime is 12571363459. The next prime is 12571363481. The reversal of 12571363477 is 77436317521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12020710321 + 550653156 = 109639^2 + 23466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12571363477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12571361477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285681738 + 6285681739.

It is an arithmetic number, because the mean of its divisors is an integer number (6285681739).

Almost surely, 2^12571363477 is an apocalyptic number.

It is an amenable number.

12571363477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571363477 is an equidigital number, since it uses as much as digits as its factorization.

12571363477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 46.

The spelling of 12571363477 in words is "twelve billion, five hundred seventy-one million, three hundred sixty-three thousand, four hundred seventy-seven".