76766361985 has 8 divisors (see below), whose sum is σ = 92166336360. Its totient is φ = 61381954944.

The previous prime is 76766361949. The next prime is 76766362009. The reversal of 76766361985 is 58916366767.

It can be written as a sum of positive squares in 4 ways, for example, as 2747541889 + 74018820096 = 52417^2 + 272064^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 76766361985 - 2⁹ = 76766361473 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 7 ways as a sum of consecutive naturals, for example, 3880980 + ... + 3900709.

It is an arithmetic number, because the mean of its divisors is an integer number (11520792045).

Almost surely, 2^76766361985 is an apocalyptic number.

It is an amenable number.

76766361985 is a deficient number, since it is larger than the sum of its proper divisors (15399974375).

76766361985 is a wasteful number, since it uses less digits than its factorization.

76766361985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783667.

The product of its digits is 68584320, while the sum is 64.

The spelling of 76766361985 in words is "seventy-six billion, seven hundred sixty-six million, three hundred sixty-one thousand, nine hundred eighty-five".