2820861611712 has 42 divisors (see below), whose sum is σ = 8085490489388. Its totient is φ = 940287203712.

The previous prime is 2820861611699. The next prime is 2820861611741. The reversal of 2820861611712 is 2171161680282.

2820861611712 is a `hidden beast` number, since 2 + 8 + 2 + 0 + 8 + 616 + 1 + 17 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2448664018 + ... + 2448665169.

Almost surely, 2^{2820861611712} is an apocalyptic number.

It is an amenable number.

2820861611712 is an abundant number, since it is smaller than the sum of its proper divisors (5264628877676).

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

2820861611712 is a wasteful number, since it uses less digits than its factorization.

2820861611712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897329205 (or 4897329192 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 2820861611712 in words is "two trillion, eight hundred twenty billion, eight hundred sixty-one million, six hundred eleven thousand, seven hundred twelve".