7161766272257 has 2 divisors, whose sum is σ = 7161766272258. Its totient is φ = 7161766272256.

The previous prime is 7161766272223. The next prime is 7161766272281. The reversal of 7161766272257 is 7522726671617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7156004855041 + 5761417216 = 2675071^2 + 75904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7161766272257 is a prime.

It is a super-2 number, since 2×7161766272257² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7161766272196 and 7161766272205.

It is not a weakly prime, because it can be changed into another prime (7161766172257) 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 as a sum of consecutive naturals, namely, 3580883136128 + 3580883136129.

It is an arithmetic number, because the mean of its divisors is an integer number (3580883136129).

Almost surely, 2^{7161766272257} is an apocalyptic number.

It is an amenable number.

7161766272257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7161766272257 is an equidigital number, since it uses as much as digits as its factorization.

7161766272257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20744640, while the sum is 59.

The spelling of 7161766272257 in words is "seven trillion, one hundred sixty-one billion, seven hundred sixty-six million, two hundred seventy-two thousand, two hundred fifty-seven".