766997949799667 has 2 divisors, whose sum is σ = 766997949799668. Its totient is φ = 766997949799666.

The previous prime is 766997949799643. The next prime is 766997949799721.

766997949799667 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766997949799667 is a prime.

It is not a weakly prime, because it can be changed into another prime (766997949798667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383498974899833 + 383498974899834.

It is an arithmetic number, because the mean of its divisors is an integer number (383498974899834).

Almost surely, 2^{766997949799667} is an apocalyptic number.

766997949799667 is a deficient number, since it is larger than the sum of its proper divisors (1).

766997949799667 is an equidigital number, since it uses as much as digits as its factorization.

766997949799667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6614731335744, while the sum is 110.

The spelling of 766997949799667 in words is "seven hundred sixty-six trillion, nine hundred ninety-seven billion, nine hundred forty-nine million, seven hundred ninety-nine thousand, six hundred sixty-seven".