1447945865629 has 2 divisors, whose sum is σ = 1447945865630. Its totient is φ = 1447945865628.

The previous prime is 1447945865627. The next prime is 1447945865677. The reversal of 1447945865629 is 9265685497441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1420928368729 + 27017496900 = 1192027^2 + 164370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447945865629 - 2¹ = 1447945865627 is a prime.

It is a super-2 number, since 2×1447945865629² (a number of 25 digits) contains 22 as substring.

Together with 1447945865627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447945865627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723972932814 + 723972932815.

It is an arithmetic number, because the mean of its divisors is an integer number (723972932815).

Almost surely, 2^{1447945865629} is an apocalyptic number.

It is an amenable number.

1447945865629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447945865629 is an equidigital number, since it uses as much as digits as its factorization.

1447945865629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 522547200, while the sum is 70.

The spelling of 1447945865629 in words is "one trillion, four hundred forty-seven billion, nine hundred forty-five million, eight hundred sixty-five thousand, six hundred twenty-nine".