826864554666 has 32 divisors (see below), whose sum is σ = 1663161292800. Its totient is φ = 274049846640.

The previous prime is 826864554647. The next prime is 826864554709. The reversal of 826864554666 is 666455468628.

It is a junction number, because it is equal to n+sod(n) for n = 826864554597 and 826864554606.

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 15 ways as a sum of consecutive naturals, for example, 10303725 + ... + 10383663.

It is an arithmetic number, because the mean of its divisors is an integer number (51973790400).

Almost surely, 2^826864554666 is an apocalyptic number.

826864554666 is an abundant number, since it is smaller than the sum of its proper divisors (836296738134).

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

826864554666 is a wasteful number, since it uses less digits than its factorization.

826864554666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89754.

The product of its digits is 398131200, while the sum is 66.

The spelling of 826864554666 in words is "eight hundred twenty-six billion, eight hundred sixty-four million, five hundred fifty-four thousand, six hundred sixty-six".