6511158866239 has 2 divisors, whose sum is σ = 6511158866240. Its totient is φ = 6511158866238.

The previous prime is 6511158866231. The next prime is 6511158866291. The reversal of 6511158866239 is 9326688511156.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6511158866239 - 2³ = 6511158866231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6511158866231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255579433119 + 3255579433120.

It is an arithmetic number, because the mean of its divisors is an integer number (3255579433120).

Almost surely, 2^{6511158866239} is an apocalyptic number.

6511158866239 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511158866239 is an equidigital number, since it uses as much as digits as its factorization.

6511158866239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18662400, while the sum is 61.

The spelling of 6511158866239 in words is "six trillion, five hundred eleven billion, one hundred fifty-eight million, eight hundred sixty-six thousand, two hundred thirty-nine".