61613171045240 has 32 divisors (see below), whose sum is σ = 138630061710000. Its totient is φ = 24645192532224.

The previous prime is 61613171045221. The next prime is 61613171045263. The reversal of 61613171045240 is 4254017131616.

61613171045240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11831876 + ... + 16224044.

Almost surely, 2^{61613171045240} is an apocalyptic number.

It is an amenable number.

61613171045240 is an abundant number, since it is smaller than the sum of its proper divisors (77016890664760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61613171045240 is a wasteful number, since it uses less digits than its factorization.

61613171045240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742879 (or 4742875 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

Adding to 61613171045240 its reverse (4254017131616), we get a palindrome (65867188176856).

The spelling of 61613171045240 in words is "sixty-one trillion, six hundred thirteen billion, one hundred seventy-one million, forty-five thousand, two hundred forty".