866501479976 has 48 divisors (see below), whose sum is σ = 1793481498900. Its totient is φ = 392173802240.

The previous prime is 866501479919. The next prime is 866501479979. The reversal of 866501479976 is 679974105668.

866501479976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 744986491876 + 121514988100 = 863126^2 + 348590^2 .

It is not an unprimeable number, because it can be changed into a prime (866501479979) 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, 1695371 + ... + 2146458.

Almost surely, 2^866501479976 is an apocalyptic number.

It is an amenable number.

866501479976 is an abundant number, since it is smaller than the sum of its proper divisors (926980018924).

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

866501479976 is a wasteful number, since it uses less digits than its factorization.

866501479976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842090 (or 3842075 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 68.

The spelling of 866501479976 in words is "eight hundred sixty-six billion, five hundred one million, four hundred seventy-nine thousand, nine hundred seventy-six".