447815652617 has 2 divisors, whose sum is σ = 447815652618. Its totient is φ = 447815652616.

The previous prime is 447815652611. The next prime is 447815652673. The reversal of 447815652617 is 716256518744.

It is an a-pointer prime, because the next prime (447815652673) can be obtained adding 447815652617 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443701199881 + 4114452736 = 666109^2 + 64144^2 .

It is a cyclic number.

It is not a de Polignac number, because 447815652617 - 2²⁴ = 447798875401 is a prime.

It is not a weakly prime, because it can be changed into another prime (447815652611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223907826308 + 223907826309.

It is an arithmetic number, because the mean of its divisors is an integer number (223907826309).

Almost surely, 2^447815652617 is an apocalyptic number.

It is an amenable number.

447815652617 is a deficient number, since it is larger than the sum of its proper divisors (1).

447815652617 is an equidigital number, since it uses as much as digits as its factorization.

447815652617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11289600, while the sum is 56.

The spelling of 447815652617 in words is "four hundred forty-seven billion, eight hundred fifteen million, six hundred fifty-two thousand, six hundred seventeen".