7261606165571 has 2 divisors, whose sum is σ = 7261606165572. Its totient is φ = 7261606165570.

The previous prime is 7261606165529. The next prime is 7261606165733. The reversal of 7261606165571 is 1755616061627.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7261606165571 is a prime.

It is a super-2 number, since 2×7261606165571² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7261606165511) 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 as a sum of consecutive naturals, namely, 3630803082785 + 3630803082786.

It is an arithmetic number, because the mean of its divisors is an integer number (3630803082786).

Almost surely, 2^{7261606165571} is an apocalyptic number.

7261606165571 is a deficient number, since it is larger than the sum of its proper divisors (1).

7261606165571 is an equidigital number, since it uses as much as digits as its factorization.

7261606165571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 7261606165571 in words is "seven trillion, two hundred sixty-one billion, six hundred six million, one hundred sixty-five thousand, five hundred seventy-one".