7897452547987 has 2 divisors, whose sum is σ = 7897452547988. Its totient is φ = 7897452547986.

The previous prime is 7897452547877. The next prime is 7897452548021.

7897452547987 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7897452547987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7897452547987.

It is not a weakly prime, because it can be changed into another prime (7897452545987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948726273993 + 3948726273994.

It is an arithmetic number, because the mean of its divisors is an integer number (3948726273994).

Almost surely, 2^{7897452547987} is an apocalyptic number.

7897452547987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897452547987 is an equidigital number, since it uses as much as digits as its factorization.

7897452547987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9957427200, while the sum is 82.

The spelling of 7897452547987 in words is "seven trillion, eight hundred ninety-seven billion, four hundred fifty-two million, five hundred forty-seven thousand, nine hundred eighty-seven".