65263643963 has 16 divisors (see below), whose sum is σ = 76919569920. Its totient is φ = 54217564800.

The previous prime is 65263643941. The next prime is 65263643969. The reversal of 65263643963 is 36934636256.

It is not a de Polignac number, because 65263643963 - 2²⁸ = 64995208507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65263643969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083518 + ... + 1142163.

It is an arithmetic number, because the mean of its divisors is an integer number (4807473120).

Almost surely, 2^65263643963 is an apocalyptic number.

65263643963 is a deficient number, since it is larger than the sum of its proper divisors (11655925957).

65263643963 is a wasteful number, since it uses less digits than its factorization.

65263643963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225818.

The product of its digits is 12597120, while the sum is 53.

The spelling of 65263643963 in words is "sixty-five billion, two hundred sixty-three million, six hundred forty-three thousand, nine hundred sixty-three".