7766480826865 has 32 divisors (see below), whose sum is σ = 10331266538880. Its totient is φ = 5578033327104.

The previous prime is 7766480826859. The next prime is 7766480826883. The reversal of 7766480826865 is 5686280846677.

It is a cyclic number.

It is not a de Polignac number, because 7766480826865 - 2⁷ = 7766480826737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18775539 + ... + 19184728.

It is an arithmetic number, because the mean of its divisors is an integer number (322852079340).

Almost surely, 2^{7766480826865} is an apocalyptic number.

It is an amenable number.

7766480826865 is a deficient number, since it is larger than the sum of its proper divisors (2564785712015).

7766480826865 is a wasteful number, since it uses less digits than its factorization.

7766480826865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37960401.

The product of its (nonzero) digits is 1300561920, while the sum is 73.

The spelling of 7766480826865 in words is "seven trillion, seven hundred sixty-six billion, four hundred eighty million, eight hundred twenty-six thousand, eight hundred sixty-five".