65656650065139 has 12 divisors (see below), whose sum is σ = 108385581060016. Its totient is φ = 37518085751472.

The previous prime is 65656650065113. The next prime is 65656650065141. The reversal of 65656650065139 is 93156005665656.

65656650065139 is a `hidden beast` number, since 6 + 5 + 6 + 5 + 66 + 50 + 0 + 6 + 513 + 9 = 666.

It is not a de Polignac number, because 65656650065139 - 2⁵ = 65656650065107 is a prime.

It is a super-2 number, since 2×65656650065139² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1042169048653 = 65656650065139 / (6 + 5 + 6 + 5 + 6 + 6 + 5 + 0 + 0 + 6 + 5 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65656650065239) 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, 521084524264 + ... + 521084524389.

Almost surely, 2^{65656650065139} is an apocalyptic number.

65656650065139 is a deficient number, since it is larger than the sum of its proper divisors (42728930994877).

65656650065139 is a wasteful number, since it uses less digits than its factorization.

65656650065139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042169048666 (or 1042169048663 counting only the distinct ones).

The product of its (nonzero) digits is 131220000, while the sum is 63.

The spelling of 65656650065139 in words is "sixty-five trillion, six hundred fifty-six billion, six hundred fifty million, sixty-five thousand, one hundred thirty-nine".