2010665570521 has 2 divisors, whose sum is σ = 2010665570522. Its totient is φ = 2010665570520.

The previous prime is 2010665570513. The next prime is 2010665570549. The reversal of 2010665570521 is 1250755660102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1886944542921 + 123721027600 = 1373661^2 + 351740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010665570521 - 2³ = 2010665570513 is a prime.

It is a super-2 number, since 2×2010665570521² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2010665577521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005332785260 + 1005332785261.

It is an arithmetic number, because the mean of its divisors is an integer number (1005332785261).

Almost surely, 2^{2010665570521} is an apocalyptic number.

It is an amenable number.

2010665570521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010665570521 is an equidigital number, since it uses as much as digits as its factorization.

2010665570521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 2010665570521 in words is "two trillion, ten billion, six hundred sixty-five million, five hundred seventy thousand, five hundred twenty-one".