866761280624832 has 112 divisors (see below), whose sum is σ = 2428816053874560. Its totient is φ = 272034860894208.

The previous prime is 866761280624809. The next prime is 866761280624839. The reversal of 866761280624832 is 238426082167668.

It is not an unprimeable number, because it can be changed into a prime (866761280624839) by changing a digit.

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, 728236773 + ... + 729426020.

It is an arithmetic number, because the mean of its divisors is an integer number (21685857623880).

Almost surely, 2^{866761280624832} is an apocalyptic number.

It is an amenable number.

866761280624832 is an abundant number, since it is smaller than the sum of its proper divisors (1562054773249728).

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

866761280624832 is a wasteful number, since it uses less digits than its factorization.

866761280624832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457662990 (or 1457662980 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 69.

The spelling of 866761280624832 in words is "eight hundred sixty-six trillion, seven hundred sixty-one billion, two hundred eighty million, six hundred twenty-four thousand, eight hundred thirty-two".