475787519969 has 2 divisors, whose sum is σ = 475787519970. Its totient is φ = 475787519968.

The previous prime is 475787519939. The next prime is 475787520011. The reversal of 475787519969 is 969915787574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397893500944 + 77894019025 = 630788^2 + 279095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475787519969 is a prime.

It is a super-2 number, since 2×475787519969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 475787519969.

It is not a weakly prime, because it can be changed into another prime (475787519939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237893759984 + 237893759985.

It is an arithmetic number, because the mean of its divisors is an integer number (237893759985).

Almost surely, 2^475787519969 is an apocalyptic number.

It is an amenable number.

475787519969 is a deficient number, since it is larger than the sum of its proper divisors (1).

475787519969 is an equidigital number, since it uses as much as digits as its factorization.

475787519969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200225600, while the sum is 77.

The spelling of 475787519969 in words is "four hundred seventy-five billion, seven hundred eighty-seven million, five hundred nineteen thousand, nine hundred sixty-nine".