766999930080385 has 16 divisors (see below), whose sum is σ = 978584826610512. Its totient is φ = 575109539942400.

The previous prime is 766999930080253. The next prime is 766999930080401. The reversal of 766999930080385 is 583080039999667.

It can be written as a sum of positive squares in 8 ways, for example, as 7097711207409 + 759902218872976 = 2664153^2 + 27566324^2 .

It is not a de Polignac number, because 766999930080385 - 2⁴³ = 758203837058177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766999930080299 and 766999930080308.

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 15 ways as a sum of consecutive naturals, for example, 18720993186 + ... + 18721034155.

It is an arithmetic number, because the mean of its divisors is an integer number (61161551663157).

Almost surely, 2^{766999930080385} is an apocalyptic number.

It is an amenable number.

766999930080385 is a deficient number, since it is larger than the sum of its proper divisors (211584896530127).

766999930080385 is a wasteful number, since it uses less digits than its factorization.

766999930080385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37442027604.

The product of its (nonzero) digits is 4761711360, while the sum is 82.

The spelling of 766999930080385 in words is "seven hundred sixty-six trillion, nine hundred ninety-nine billion, nine hundred thirty million, eighty thousand, three hundred eighty-five".