663832532617873 has 2 divisors, whose sum is σ = 663832532617874. Its totient is φ = 663832532617872.

The previous prime is 663832532617829. The next prime is 663832532617927. The reversal of 663832532617873 is 378716235238366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489922455492864 + 173910077125009 = 22134192^2 + 13187497^2 .

It is a cyclic number.

It is not a de Polignac number, because 663832532617873 - 2¹⁷ = 663832532486801 is a prime.

It is not a weakly prime, because it can be changed into another prime (663832532617673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331916266308936 + 331916266308937.

It is an arithmetic number, because the mean of its divisors is an integer number (331916266308937).

Almost surely, 2^{663832532617873} is an apocalyptic number.

It is an amenable number.

663832532617873 is a deficient number, since it is larger than the sum of its proper divisors (1).

663832532617873 is an equidigital number, since it uses as much as digits as its factorization.

663832532617873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097349120, while the sum is 70.

The spelling of 663832532617873 in words is "six hundred sixty-three trillion, eight hundred thirty-two billion, five hundred thirty-two million, six hundred seventeen thousand, eight hundred seventy-three".