3871210257247 has 2 divisors, whose sum is σ = 3871210257248. Its totient is φ = 3871210257246.

The previous prime is 3871210257209. The next prime is 3871210257283. The reversal of 3871210257247 is 7427520121783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871210257247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3871210257247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871210257547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935605128623 + 1935605128624.

It is an arithmetic number, because the mean of its divisors is an integer number (1935605128624).

Almost surely, 2^{3871210257247} is an apocalyptic number.

3871210257247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871210257247 is an equidigital number, since it uses as much as digits as its factorization.

3871210257247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 3871210257247 in words is "three trillion, eight hundred seventy-one billion, two hundred ten million, two hundred fifty-seven thousand, two hundred forty-seven".