65606145239 has 4 divisors (see below), whose sum is σ = 66106955640. Its totient is φ = 65105334840.

The previous prime is 65606145191. The next prime is 65606145299. The reversal of 65606145239 is 93254160656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65606145239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65606145193 and 65606145202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65606145299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250405004 + ... + 250405265.

It is an arithmetic number, because the mean of its divisors is an integer number (16526738910).

Almost surely, 2^65606145239 is an apocalyptic number.

65606145239 is a deficient number, since it is larger than the sum of its proper divisors (500810401).

65606145239 is a wasteful number, since it uses less digits than its factorization.

65606145239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500810400.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 65606145239 in words is "sixty-five billion, six hundred six million, one hundred forty-five thousand, two hundred thirty-nine".