2865084026821 has 8 divisors (see below), whose sum is σ = 2881904154624. Its totient is φ = 2848282854480.

The previous prime is 2865084026797. The next prime is 2865084026843. The reversal of 2865084026821 is 1286204805682.

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

It is a cyclic number.

It is not a de Polignac number, because 2865084026821 - 2⁹ = 2865084026309 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 (2865084026621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435626 + ... + 5040331.

It is an arithmetic number, because the mean of its divisors is an integer number (360238019328).

Almost surely, 2^{2865084026821} is an apocalyptic number.

It is an amenable number.

2865084026821 is a deficient number, since it is larger than the sum of its proper divisors (16820127803).

2865084026821 is a wasteful number, since it uses less digits than its factorization.

2865084026821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9477731.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 2865084026821 in words is "two trillion, eight hundred sixty-five billion, eighty-four million, twenty-six thousand, eight hundred twenty-one".