65898639063 has 12 divisors (see below), whose sum is σ = 97759543128. Its totient is φ = 42745062960.

The previous prime is 65898639049. The next prime is 65898639067. The reversal of 65898639063 is 36093689856.

It is not a de Polignac number, because 65898639063 - 2⁴ = 65898639047 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65898639067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98946573 + ... + 98947238.

It is an arithmetic number, because the mean of its divisors is an integer number (8146628594).

Almost surely, 2^65898639063 is an apocalyptic number.

65898639063 is a deficient number, since it is larger than the sum of its proper divisors (31860904065).

65898639063 is a wasteful number, since it uses less digits than its factorization.

65898639063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197893854 (or 197893851 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 65898639063 in words is "sixty-five billion, eight hundred ninety-eight million, six hundred thirty-nine thousand, sixty-three".