2870528521721 has 12 divisors (see below), whose sum is σ = 3339242057088. Its totient is φ = 2460411889992.

The previous prime is 2870528521717. The next prime is 2870528521753. The reversal of 2870528521721 is 1271258250782.

It is not a de Polignac number, because 2870528521721 - 2² = 2870528521717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2870528521721.

It is not an unprimeable number, because it can be changed into a prime (2870528521121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2678720 + ... + 3593966.

It is an arithmetic number, because the mean of its divisors is an integer number (278270171424).

Almost surely, 2^{2870528521721} is an apocalyptic number.

It is an amenable number.

2870528521721 is a deficient number, since it is larger than the sum of its proper divisors (468713535367).

2870528521721 is an equidigital number, since it uses as much as digits as its factorization.

2870528521721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979268 (or 979261 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 50.

The spelling of 2870528521721 in words is "two trillion, eight hundred seventy billion, five hundred twenty-eight million, five hundred twenty-one thousand, seven hundred twenty-one".