2506943388871 has 2 divisors, whose sum is σ = 2506943388872. Its totient is φ = 2506943388870.

The previous prime is 2506943388857. The next prime is 2506943388913. The reversal of 2506943388871 is 1788833496052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2506943388871 - 2¹⁹ = 2506942864583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506943388571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253471694435 + 1253471694436.

It is an arithmetic number, because the mean of its divisors is an integer number (1253471694436).

It is a 1-persistent number, because it is pandigital, but 2⋅2506943388871 = 5013886777742 is not.

Almost surely, 2^{2506943388871} is an apocalyptic number.

2506943388871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506943388871 is an equidigital number, since it uses as much as digits as its factorization.

2506943388871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 2506943388871 in words is "two trillion, five hundred six billion, nine hundred forty-three million, three hundred eighty-eight thousand, eight hundred seventy-one".