2521449020061 has 8 divisors (see below), whose sum is σ = 3735480029760. Its totient is φ = 1680966013356.

The previous prime is 2521449020039. The next prime is 2521449020087. The reversal of 2521449020061 is 1600209441252.

It is a happy number.

2521449020061 is a `hidden beast` number, since 2 + 5 + 2 + 1 + 449 + 0 + 200 + 6 + 1 = 666.

It is not a de Polignac number, because 2521449020061 - 2¹¹ = 2521449018013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2521449019998 and 2521449020025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521449020561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46693500345 + ... + 46693500398.

It is an arithmetic number, because the mean of its divisors is an integer number (466935003720).

Almost surely, 2^{2521449020061} is an apocalyptic number.

It is an amenable number.

2521449020061 is a deficient number, since it is larger than the sum of its proper divisors (1214031009699).

2521449020061 is an equidigital number, since it uses as much as digits as its factorization.

2521449020061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93387000752 (or 93387000746 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 2521449020061 in words is "two trillion, five hundred twenty-one billion, four hundred forty-nine million, twenty thousand, sixty-one".