61107320727713 has 8 divisors (see below), whose sum is σ = 65816007401256. Its totient is φ = 56399794560000.

The previous prime is 61107320727707. The next prime is 61107320727727. The reversal of 61107320727713 is 31772702370116.

It can be written as a sum of positive squares in 4 ways, for example, as 7195205382544 + 53912115345169 = 2682388^2 + 7342487^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61107320727713 - 2¹⁰ = 61107320726689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61107320726713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290017088 + ... + 290227713.

It is an arithmetic number, because the mean of its divisors is an integer number (8227000925157).

Almost surely, 2^{61107320727713} is an apocalyptic number.

It is an amenable number.

61107320727713 is a deficient number, since it is larger than the sum of its proper divisors (4708686673543).

61107320727713 is a wasteful number, since it uses less digits than its factorization.

61107320727713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580252915.

The product of its (nonzero) digits is 518616, while the sum is 47.

The spelling of 61107320727713 in words is "sixty-one trillion, one hundred seven billion, three hundred twenty million, seven hundred twenty-seven thousand, seven hundred thirteen".