65863115138 has 8 divisors (see below), whose sum is σ = 99668962188. Its totient is φ = 32640127744.

The previous prime is 65863115119. The next prime is 65863115161. The reversal of 65863115138 is 83151136856.

It can be written as a sum of positive squares in 2 ways, for example, as 38922160369 + 26940954769 = 197287^2 + 164137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 65863115092 and 65863115101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145714631 + ... + 145715082.

Almost surely, 2^65863115138 is an apocalyptic number.

65863115138 is a deficient number, since it is larger than the sum of its proper divisors (33805847050).

65863115138 is a wasteful number, since it uses less digits than its factorization.

65863115138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291429828.

The product of its digits is 518400, while the sum is 47.

The spelling of 65863115138 in words is "sixty-five billion, eight hundred sixty-three million, one hundred fifteen thousand, one hundred thirty-eight".