2864818812161 has 4 divisors (see below), whose sum is σ = 2864840808192. Its totient is φ = 2864796816132.

The previous prime is 2864818812133. The next prime is 2864818812187. The reversal of 2864818812161 is 1612188184682.

It is a happy number.

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 not a de Polignac number, because 2864818812161 - 2³⁸ = 2589940905217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2864818812097 and 2864818812106.

It is not an unprimeable number, because it can be changed into a prime (2864818812061) 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, 10801481 + ... + 11063526.

It is an arithmetic number, because the mean of its divisors is an integer number (716210202048).

Almost surely, 2^{2864818812161} is an apocalyptic number.

It is an amenable number.

2864818812161 is a deficient number, since it is larger than the sum of its proper divisors (21996031).

2864818812161 is a wasteful number, since it uses less digits than its factorization.

2864818812161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21996030.

The product of its digits is 2359296, while the sum is 56.

The spelling of 2864818812161 in words is "two trillion, eight hundred sixty-four billion, eight hundred eighteen million, eight hundred twelve thousand, one hundred sixty-one".