472273977569 has 2 divisors, whose sum is σ = 472273977570. Its totient is φ = 472273977568.

The previous prime is 472273977563. The next prime is 472273977631. The reversal of 472273977569 is 965779372274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236985923344 + 235288054225 = 486812^2 + 485065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472273977569 is a prime.

It is a super-2 number, since 2×472273977569² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 472273977499 and 472273977508.

It is not a weakly prime, because it can be changed into another prime (472273977563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236136988784 + 236136988785.

It is an arithmetic number, because the mean of its divisors is an integer number (236136988785).

Almost surely, 2^472273977569 is an apocalyptic number.

It is an amenable number.

472273977569 is a deficient number, since it is larger than the sum of its proper divisors (1).

472273977569 is an equidigital number, since it uses as much as digits as its factorization.

472273977569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280052640, while the sum is 68.

The spelling of 472273977569 in words is "four hundred seventy-two billion, two hundred seventy-three million, nine hundred seventy-seven thousand, five hundred sixty-nine".