7945545889271 has 2 divisors, whose sum is σ = 7945545889272. Its totient is φ = 7945545889270.

The previous prime is 7945545889189. The next prime is 7945545889283. The reversal of 7945545889271 is 1729885455497.

It is a strong prime.

It is an emirp because it is prime and its reverse (1729885455497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7945545889271 - 2³⁴ = 7928366020087 is a prime.

It is a super-2 number, since 2×7945545889271² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7945545889291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972772944635 + 3972772944636.

It is an arithmetic number, because the mean of its divisors is an integer number (3972772944636).

Almost surely, 2^{7945545889271} is an apocalyptic number.

7945545889271 is a deficient number, since it is larger than the sum of its proper divisors (1).

7945545889271 is an equidigital number, since it uses as much as digits as its factorization.

7945545889271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064000, while the sum is 74.

The spelling of 7945545889271 in words is "seven trillion, nine hundred forty-five billion, five hundred forty-five million, eight hundred eighty-nine thousand, two hundred seventy-one".