63875567369 has 2 divisors, whose sum is σ = 63875567370. Its totient is φ = 63875567368.

The previous prime is 63875567339. The next prime is 63875567513. The reversal of 63875567369 is 96376557836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43529397769 + 20346169600 = 208637^2 + 142640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63875567369 is a prime.

It is a super-2 number, since 2×63875567369² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63875567339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31937783684 + 31937783685.

It is an arithmetic number, because the mean of its divisors is an integer number (31937783685).

Almost surely, 2^63875567369 is an apocalyptic number.

It is an amenable number.

63875567369 is a deficient number, since it is larger than the sum of its proper divisors (1).

63875567369 is an equidigital number, since it uses as much as digits as its factorization.

63875567369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171460800, while the sum is 65.

The spelling of 63875567369 in words is "sixty-three billion, eight hundred seventy-five million, five hundred sixty-seven thousand, three hundred sixty-nine".