2820125856156 has 24 divisors (see below), whose sum is σ = 7520335616640. Its totient is φ = 805750244592.

The previous prime is 2820125856127. The next prime is 2820125856221. The reversal of 2820125856156 is 6516585210282.

It is a super-2 number, since 2×2820125856156² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2820125856099 and 2820125856108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16786463346 + ... + 16786463513.

It is an arithmetic number, because the mean of its divisors is an integer number (313347317360).

Almost surely, 2^{2820125856156} is an apocalyptic number.

It is an amenable number.

2820125856156 is an abundant number, since it is smaller than the sum of its proper divisors (4700209760484).

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

2820125856156 is a wasteful number, since it uses less digits than its factorization.

2820125856156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33572926873 (or 33572926871 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 51.

The spelling of 2820125856156 in words is "two trillion, eight hundred twenty billion, one hundred twenty-five million, eight hundred fifty-six thousand, one hundred fifty-six".