866443844165734 has 8 divisors (see below), whose sum is σ = 1299711540495240. Its totient is φ = 433206664000656.

The previous prime is 866443844165681. The next prime is 866443844165773. The reversal of 866443844165734 is 437561448344668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×866443844165734² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7628970124 + ... + 7629083695.

It is an arithmetic number, because the mean of its divisors is an integer number (162463942561905).

Almost surely, 2^{866443844165734} is an apocalyptic number.

866443844165734 is a deficient number, since it is larger than the sum of its proper divisors (433267696329506).

866443844165734 is a wasteful number, since it uses less digits than its factorization.

866443844165734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258082214.

The product of its digits is 4459069440, while the sum is 73.

The spelling of 866443844165734 in words is "eight hundred sixty-six trillion, four hundred forty-three billion, eight hundred forty-four million, one hundred sixty-five thousand, seven hundred thirty-four".