475443001720649 has 2 divisors, whose sum is σ = 475443001720650. Its totient is φ = 475443001720648.

The previous prime is 475443001720613. The next prime is 475443001720693. The reversal of 475443001720649 is 946027100344574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261188264142400 + 214254737578249 = 16161320^2 + 14637443^2 .

It is a cyclic number.

It is not a de Polignac number, because 475443001720649 - 2²⁸ = 475442733285193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 475443001720594 and 475443001720603.

It is not a weakly prime, because it can be changed into another prime (475443001720549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237721500860324 + 237721500860325.

It is an arithmetic number, because the mean of its divisors is an integer number (237721500860325).

Almost surely, 2^{475443001720649} is an apocalyptic number.

It is an amenable number.

475443001720649 is a deficient number, since it is larger than the sum of its proper divisors (1).

475443001720649 is an equidigital number, since it uses as much as digits as its factorization.

475443001720649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 475443001720649 in words is "four hundred seventy-five trillion, four hundred forty-three billion, one million, seven hundred twenty thousand, six hundred forty-nine".