2820001010920 has 16 divisors (see below), whose sum is σ = 6345002274660. Its totient is φ = 1128000404352.

The previous prime is 2820001010917. The next prime is 2820001010921. The reversal of 2820001010920 is 290101000282.

It can be written as a sum of positive squares in 2 ways, for example, as 2806181127556 + 13819883364 = 1675166^2 + 117558^2 .

It is not an unprimeable number, because it can be changed into a prime (2820001010921) 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, 35250012597 + ... + 35250012676.

Almost surely, 2^{2820001010920} is an apocalyptic number.

2820001010920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820001010920 is an abundant number, since it is smaller than the sum of its proper divisors (3525001263740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2820001010920 is a wasteful number, since it uses less digits than its factorization.

2820001010920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70500025284 (or 70500025280 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 2820001010920 in words is "two trillion, eight hundred twenty billion, one million, ten thousand, nine hundred twenty".