866444150587072 has 28 divisors (see below), whose sum is σ = 1725557151469600. Its totient is φ = 431658096673536.

The previous prime is 866444150587049. The next prime is 866444150587111. The reversal of 866444150587072 is 270785051444668.

It is a junction number, because it is equal to n+sod(n) for n = 866444150586989 and 866444150587007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24437148072 + ... + 24437183527.

Almost surely, 2^{866444150587072} is an apocalyptic number.

It is an amenable number.

866444150587072 is a deficient number, since it is larger than the sum of its proper divisors (859113000882528).

866444150587072 is a wasteful number, since it uses less digits than its factorization.

866444150587072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48874331888 (or 48874331878 counting only the distinct ones).

The product of its (nonzero) digits is 361267200, while the sum is 67.

The spelling of 866444150587072 in words is "eight hundred sixty-six trillion, four hundred forty-four billion, one hundred fifty million, five hundred eighty-seven thousand, seventy-two".