7897452547877 has 2 divisors, whose sum is σ = 7897452547878. Its totient is φ = 7897452547876.

The previous prime is 7897452547861. The next prime is 7897452547987. The reversal of 7897452547877 is 7787452547987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4505965671076 + 3391486876801 = 2122726^2 + 1841599^2 .

It is a cyclic number.

It is not a de Polignac number, because 7897452547877 - 2⁴ = 7897452547861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7897452547847) 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, 3948726273938 + 3948726273939.

It is an arithmetic number, because the mean of its divisors is an integer number (3948726273939).

Almost surely, 2^{7897452547877} is an apocalyptic number.

It is an amenable number.

7897452547877 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897452547877 is an equidigital number, since it uses as much as digits as its factorization.

7897452547877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7744665600, while the sum is 80.

The spelling of 7897452547877 in words is "seven trillion, eight hundred ninety-seven billion, four hundred fifty-two million, five hundred forty-seven thousand, eight hundred seventy-seven".