1471631646257 has 2 divisors, whose sum is σ = 1471631646258. Its totient is φ = 1471631646256.

The previous prime is 1471631646193. The next prime is 1471631646347. The reversal of 1471631646257 is 7526461361741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1469062778401 + 2568867856 = 1212049^2 + 50684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1471631646257 - 2⁶ = 1471631646193 is a prime.

It is a super-2 number, since 2×1471631646257² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1471631646199 and 1471631646208.

It is not a weakly prime, because it can be changed into another prime (1471631645257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735815823128 + 735815823129.

It is an arithmetic number, because the mean of its divisors is an integer number (735815823129).

Almost surely, 2^{1471631646257} is an apocalyptic number.

It is an amenable number.

1471631646257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1471631646257 is an equidigital number, since it uses as much as digits as its factorization.

1471631646257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 53.

The spelling of 1471631646257 in words is "one trillion, four hundred seventy-one billion, six hundred thirty-one million, six hundred forty-six thousand, two hundred fifty-seven".