766668888899999 has 8 divisors (see below), whose sum is σ = 793455286980000. Its totient is φ = 739905793476192.

The previous prime is 766668888899957. The next prime is 766668888900017. The reversal of 766668888899999 is 999998888866667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766668888899999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766668888899299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5825597099 + ... + 5825728700.

It is an arithmetic number, because the mean of its divisors is an integer number (99181910872500).

Almost surely, 2^{766668888899999} is an apocalyptic number.

766668888899999 is a deficient number, since it is larger than the sum of its proper divisors (26786398080001).

766668888899999 is a wasteful number, since it uses less digits than its factorization.

766668888899999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11651328097.

The product of its digits is 17553572757504, while the sum is 116.

The spelling of 766668888899999 in words is "seven hundred sixty-six trillion, six hundred sixty-eight billion, eight hundred eighty-eight million, eight hundred ninety-nine thousand, nine hundred ninety-nine".