866444010047 has 32 divisors (see below), whose sum is σ = 1085896488960. Its totient is φ = 671624110080.

The previous prime is 866444010041. The next prime is 866444010059. The reversal of 866444010047 is 740010444668.

It is not a de Polignac number, because 866444010047 - 2⁸ = 866444009791 is a prime.

It is a super-4 number, since 4×866444010047⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866444010041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14951354 + ... + 15009192.

It is an arithmetic number, because the mean of its divisors is an integer number (33934265280).

Almost surely, 2^866444010047 is an apocalyptic number.

866444010047 is a deficient number, since it is larger than the sum of its proper divisors (219452478913).

866444010047 is a wasteful number, since it uses less digits than its factorization.

866444010047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58871.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 866444010047 in words is "eight hundred sixty-six billion, four hundred forty-four million, ten thousand, forty-seven".