866757446658764 has 36 divisors (see below), whose sum is σ = 1594243257660144. Its totient is φ = 411553894691808.

The previous prime is 866757446658673. The next prime is 866757446658767. The reversal of 866757446658764 is 467856644757668.

It is a self number, because there is not a number n which added to its sum of digits gives 866757446658764.

It is not an unprimeable number, because it can be changed into a prime (866757446658767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242031707 + ... + 245586770.

It is an arithmetic number, because the mean of its divisors is an integer number (44284534935004).

Almost surely, 2^{866757446658764} is an apocalyptic number.

It is an amenable number.

866757446658764 is a deficient number, since it is larger than the sum of its proper divisors (727485811001380).

866757446658764 is a wasteful number, since it uses less digits than its factorization.

866757446658764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487618782 (or 487618641 counting only the distinct ones).

The product of its digits is 273118003200, while the sum is 89.

The spelling of 866757446658764 in words is "eight hundred sixty-six trillion, seven hundred fifty-seven billion, four hundred forty-six million, six hundred fifty-eight thousand, seven hundred sixty-four".