7897452545987 has 2 divisors, whose sum is σ = 7897452545988. Its totient is φ = 7897452545986.

The previous prime is 7897452545881. The next prime is 7897452545993. The reversal of 7897452545987 is 7895452547987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7897452545987 - 2¹⁰ = 7897452544963 is a prime.

It is a super-2 number, since 2×7897452545987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7897452547987) 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, 3948726272993 + 3948726272994.

It is an arithmetic number, because the mean of its divisors is an integer number (3948726272994).

Almost surely, 2^{7897452545987} is an apocalyptic number.

7897452545987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897452545987 is an equidigital number, since it uses as much as digits as its factorization.

7897452545987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448000, while the sum is 80.

The spelling of 7897452545987 in words is "seven trillion, eight hundred ninety-seven billion, four hundred fifty-two million, five hundred forty-five thousand, nine hundred eighty-seven".