7182666457 has 2 divisors, whose sum is σ = 7182666458. Its totient is φ = 7182666456.

The previous prime is 7182666433. The next prime is 7182666479. The reversal of 7182666457 is 7546662817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6062023881 + 1120642576 = 77859^2 + 33476^2 .

It is an emirp because it is prime and its reverse (7546662817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7182666457 - 2¹⁹ = 7182142169 is a prime.

It is not a weakly prime, because it can be changed into another prime (7182666487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3591333228 + 3591333229.

It is an arithmetic number, because the mean of its divisors is an integer number (3591333229).

Almost surely, 2^7182666457 is an apocalyptic number.

It is an amenable number.

7182666457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7182666457 is an equidigital number, since it uses as much as digits as its factorization.

7182666457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 52.

The square root of 7182666457 is about 84750.6133134150. The cubic root of 7182666457 is about 1929.4279544408.

The spelling of 7182666457 in words is "seven billion, one hundred eighty-two million, six hundred sixty-six thousand, four hundred fifty-seven".