61613171045239 has 4 divisors (see below), whose sum is σ = 67214368413000. Its totient is φ = 56011973677480.

The previous prime is 61613171045221. The next prime is 61613171045263. The reversal of 61613171045239 is 93254017131616.

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

It is a cyclic number.

It is not a de Polignac number, because 61613171045239 - 2⁵ = 61613171045207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61613171045192 and 61613171045201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61613171045269) 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, 2800598683864 + ... + 2800598683885.

It is an arithmetic number, because the mean of its divisors is an integer number (16803592103250).

Almost surely, 2^{61613171045239} is an apocalyptic number.

61613171045239 is a deficient number, since it is larger than the sum of its proper divisors (5601197367761).

61613171045239 is a wasteful number, since it uses less digits than its factorization.

61613171045239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601197367760.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 61613171045239 in words is "sixty-one trillion, six hundred thirteen billion, one hundred seventy-one million, forty-five thousand, two hundred thirty-nine".