2081652952609 has 2 divisors, whose sum is σ = 2081652952610. Its totient is φ = 2081652952608.

The previous prime is 2081652952601. The next prime is 2081652952627. The reversal of 2081652952609 is 9062592561802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1689311070225 + 392341882384 = 1299735^2 + 626372^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081652952609 - 2³ = 2081652952601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2081652952609.

It is not a weakly prime, because it can be changed into another prime (2081652952601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040826476304 + 1040826476305.

It is an arithmetic number, because the mean of its divisors is an integer number (1040826476305).

Almost surely, 2^{2081652952609} is an apocalyptic number.

It is an amenable number.

2081652952609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081652952609 is an equidigital number, since it uses as much as digits as its factorization.

2081652952609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 2081652952609 in words is "two trillion, eighty-one billion, six hundred fifty-two million, nine hundred fifty-two thousand, six hundred nine".