61275658718 has 8 divisors (see below), whose sum is σ = 91940040048. Its totient is φ = 30628978704.

The previous prime is 61275658699. The next prime is 61275658739. The reversal of 61275658718 is 81785657216.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4416671 + ... + 4430522.

It is an arithmetic number, because the mean of its divisors is an integer number (11492505006).

Almost surely, 2^61275658718 is an apocalyptic number.

61275658718 is a deficient number, since it is larger than the sum of its proper divisors (30664381330).

61275658718 is a wasteful number, since it uses less digits than its factorization.

61275658718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8850658.

The product of its digits is 5644800, while the sum is 56.

The spelling of 61275658718 in words is "sixty-one billion, two hundred seventy-five million, six hundred fifty-eight thousand, seven hundred eighteen".