17881241013487 has 2 divisors, whose sum is σ = 17881241013488. Its totient is φ = 17881241013486.

The previous prime is 17881241013473. The next prime is 17881241013499. The reversal of 17881241013487 is 78431014218871.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17881241013487 - 2⁷ = 17881241013359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17881241013457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8940620506743 + 8940620506744.

It is an arithmetic number, because the mean of its divisors is an integer number (8940620506744).

Almost surely, 2^{17881241013487} is an apocalyptic number.

17881241013487 is a deficient number, since it is larger than the sum of its proper divisors (1).

17881241013487 is an equidigital number, since it uses as much as digits as its factorization.

17881241013487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2408448, while the sum is 55.

The spelling of 17881241013487 in words is "seventeen trillion, eight hundred eighty-one billion, two hundred forty-one million, thirteen thousand, four hundred eighty-seven".