6578981911 has 2 divisors, whose sum is σ = 6578981912. Its totient is φ = 6578981910.

The previous prime is 6578981887. The next prime is 6578981921. The reversal of 6578981911 is 1191898756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6578981911 - 2⁵ = 6578981879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6578981921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3289490955 + 3289490956.

It is an arithmetic number, because the mean of its divisors is an integer number (3289490956).

Almost surely, 2^6578981911 is an apocalyptic number.

6578981911 is a deficient number, since it is larger than the sum of its proper divisors (1).

6578981911 is an equidigital number, since it uses as much as digits as its factorization.

6578981911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 55.

The square root of 6578981911 is about 81110.9234998591. The cubic root of 6578981911 is about 1873.7841633272.

The spelling of 6578981911 in words is "six billion, five hundred seventy-eight million, nine hundred eighty-one thousand, nine hundred eleven".