7666286816 has 36 divisors (see below), whose sum is σ = 16033070088. Its totient is φ = 3607660032.

The previous prime is 7666286809. The next prime is 7666286821. The reversal of 7666286816 is 6186826667.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 405236 + ... + 423731.

It is an arithmetic number, because the mean of its divisors is an integer number (445363058).

Almost surely, 2^7666286816 is an apocalyptic number.

It is an amenable number.

7666286816 is an abundant number, since it is smaller than the sum of its proper divisors (8366783272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7666286816 is a wasteful number, since it uses less digits than its factorization.

7666286816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829011 (or 828986 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 56.

The square root of 7666286816 is about 87557.3344500619. The cubic root of 7666286816 is about 1971.7946674832.

The spelling of 7666286816 in words is "seven billion, six hundred sixty-six million, two hundred eighty-six thousand, eight hundred sixteen".