2478671446897 has 2 divisors, whose sum is σ = 2478671446898. Its totient is φ = 2478671446896.

The previous prime is 2478671446847. The next prime is 2478671446907. The reversal of 2478671446897 is 7986441768742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893827354896 + 584844092001 = 1376164^2 + 764751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478671446897 - 2¹¹ = 2478671444849 is a prime.

It is a super-2 number, since 2×2478671446897² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2478671446847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239335723448 + 1239335723449.

It is an arithmetic number, because the mean of its divisors is an integer number (1239335723449).

Almost surely, 2^{2478671446897} is an apocalyptic number.

It is an amenable number.

2478671446897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478671446897 is an equidigital number, since it uses as much as digits as its factorization.

2478671446897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 910393344, while the sum is 73.

The spelling of 2478671446897 in words is "two trillion, four hundred seventy-eight billion, six hundred seventy-one million, four hundred forty-six thousand, eight hundred ninety-seven".