866421028301 has 4 divisors (see below), whose sum is σ = 867768495552. Its totient is φ = 865073561052.

The previous prime is 866421028283. The next prime is 866421028303. The reversal of 866421028301 is 103820124668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866421028301 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 (866421028303) 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, 673732661 + ... + 673733946.

It is an arithmetic number, because the mean of its divisors is an integer number (216942123888).

Almost surely, 2^866421028301 is an apocalyptic number.

It is an amenable number.

866421028301 is a deficient number, since it is larger than the sum of its proper divisors (1347467251).

866421028301 is a wasteful number, since it uses less digits than its factorization.

866421028301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347467250.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 866421028301 in words is "eight hundred sixty-six billion, four hundred twenty-one million, twenty-eight thousand, three hundred one".