768556151651611 has 2 divisors, whose sum is σ = 768556151651612. Its totient is φ = 768556151651610.

The previous prime is 768556151651593. The next prime is 768556151651663. The reversal of 768556151651611 is 116156151655867.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (116156151655867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768556151651611 is a prime.

It is not a weakly prime, because it can be changed into another prime (768556151651671) 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, 384278075825805 + 384278075825806.

It is an arithmetic number, because the mean of its divisors is an integer number (384278075825806).

Almost surely, 2^{768556151651611} is an apocalyptic number.

768556151651611 is a deficient number, since it is larger than the sum of its proper divisors (1).

768556151651611 is an equidigital number, since it uses as much as digits as its factorization.

768556151651611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360000, while the sum is 64.

The spelling of 768556151651611 in words is "seven hundred sixty-eight trillion, five hundred fifty-six billion, one hundred fifty-one million, six hundred fifty-one thousand, six hundred eleven".