6561115902967 has 2 divisors, whose sum is σ = 6561115902968. Its totient is φ = 6561115902966.

The previous prime is 6561115902959. The next prime is 6561115903003. The reversal of 6561115902967 is 7692095111656.

It is a happy number.

6561115902967 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6561115902967 - 2³ = 6561115902959 is a prime.

It is a super-3 number, since 3×6561115902967³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6561115902767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280557951483 + 3280557951484.

It is an arithmetic number, because the mean of its divisors is an integer number (3280557951484).

Almost surely, 2^{6561115902967} is an apocalyptic number.

6561115902967 is a deficient number, since it is larger than the sum of its proper divisors (1).

6561115902967 is an equidigital number, since it uses as much as digits as its factorization.

6561115902967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6123600, while the sum is 58.

The spelling of 6561115902967 in words is "six trillion, five hundred sixty-one billion, one hundred fifteen million, nine hundred two thousand, nine hundred sixty-seven".