63865518323 has 2 divisors, whose sum is σ = 63865518324. Its totient is φ = 63865518322.

The previous prime is 63865518307. The next prime is 63865518373. The reversal of 63865518323 is 32381556836.

It is an a-pointer prime, because the next prime (63865518373) can be obtained adding 63865518323 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63865518323 - 2⁴ = 63865518307 is a prime.

It is not a weakly prime, because it can be changed into another prime (63865518373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31932759161 + 31932759162.

It is an arithmetic number, because the mean of its divisors is an integer number (31932759162).

Almost surely, 2^63865518323 is an apocalyptic number.

63865518323 is a deficient number, since it is larger than the sum of its proper divisors (1).

63865518323 is an equidigital number, since it uses as much as digits as its factorization.

63865518323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 50.

The spelling of 63865518323 in words is "sixty-three billion, eight hundred sixty-five million, five hundred eighteen thousand, three hundred twenty-three".