866802147274241 has 4 divisors (see below), whose sum is σ = 866925746617812. Its totient is φ = 866678547930672.

The previous prime is 866802147274211. The next prime is 866802147274291. The reversal of 866802147274241 is 142472741208668.

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

It can be written as a sum of positive squares in 2 ways, for example, as 318717861834241 + 548084285440000 = 17852671^2 + 23411200^2 .

It is a cyclic number.

It is not a de Polignac number, because 866802147274241 - 2⁶ = 866802147274177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866802147274211) 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, 61799661266 + ... + 61799675291.

It is an arithmetic number, because the mean of its divisors is an integer number (216731436654453).

Almost surely, 2^{866802147274241} is an apocalyptic number.

It is an amenable number.

866802147274241 is a deficient number, since it is larger than the sum of its proper divisors (123599343571).

866802147274241 is a wasteful number, since it uses less digits than its factorization.

866802147274241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123599343570.

The product of its (nonzero) digits is 57802752, while the sum is 62.

The spelling of 866802147274241 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred forty-seven million, two hundred seventy-four thousand, two hundred forty-one".