2820332078665 has 16 divisors (see below), whose sum is σ = 3598179211008. Its totient is φ = 2117447016256.

The previous prime is 2820332078591. The next prime is 2820332078689. The reversal of 2820332078665 is 5668702330282.

It is a cyclic number.

It is not a de Polignac number, because 2820332078665 - 2⁷ = 2820332078537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231358309 + ... + 231370498.

It is an arithmetic number, because the mean of its divisors is an integer number (224886200688).

Almost surely, 2^{2820332078665} is an apocalyptic number.

It is an amenable number.

2820332078665 is a deficient number, since it is larger than the sum of its proper divisors (777847132343).

2820332078665 is a wasteful number, since it uses less digits than its factorization.

2820332078665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462728888.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 2820332078665 in words is "two trillion, eight hundred twenty billion, three hundred thirty-two million, seventy-eight thousand, six hundred sixty-five".