866644091062 has 16 divisors (see below), whose sum is σ = 1412526873600. Its totient is φ = 397273182120.

The previous prime is 866644091017. The next prime is 866644091063. The reversal of 866644091062 is 260190446668.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866644091063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367844362 + ... + 367846717.

It is an arithmetic number, because the mean of its divisors is an integer number (88282929600).

Almost surely, 2^866644091062 is an apocalyptic number.

866644091062 is a deficient number, since it is larger than the sum of its proper divisors (545882782538).

866644091062 is a wasteful number, since it uses less digits than its factorization.

866644091062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735691131.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 866644091062 in words is "eight hundred sixty-six billion, six hundred forty-four million, ninety-one thousand, sixty-two".