61116722347 has 4 divisors (see below), whose sum is σ = 61687906776. Its totient is φ = 60545537920.

The previous prime is 61116722339. The next prime is 61116722357. The reversal of 61116722347 is 74322761116.

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 61116722347 - 2³ = 61116722339 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61116722327) 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, 285592054 + ... + 285592267.

It is an arithmetic number, because the mean of its divisors is an integer number (15421976694).

Almost surely, 2^61116722347 is an apocalyptic number.

61116722347 is a deficient number, since it is larger than the sum of its proper divisors (571184429).

61116722347 is a wasteful number, since it uses less digits than its factorization.

61116722347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571184428.

The product of its digits is 84672, while the sum is 40.

The spelling of 61116722347 in words is "sixty-one billion, one hundred sixteen million, seven hundred twenty-two thousand, three hundred forty-seven".