866458629311 has 4 divisors (see below), whose sum is σ = 945227595624. Its totient is φ = 787689663000.

The previous prime is 866458629251. The next prime is 866458629347. The reversal of 866458629311 is 113926854668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866458629311 - 2¹⁸ = 866458367167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866458679311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39384483140 + ... + 39384483161.

It is an arithmetic number, because the mean of its divisors is an integer number (236306898906).

Almost surely, 2^866458629311 is an apocalyptic number.

866458629311 is a deficient number, since it is larger than the sum of its proper divisors (78768966313).

866458629311 is a wasteful number, since it uses less digits than its factorization.

866458629311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78768966312.

The product of its digits is 14929920, while the sum is 59.

The spelling of 866458629311 in words is "eight hundred sixty-six billion, four hundred fifty-eight million, six hundred twenty-nine thousand, three hundred eleven".