61308336313 has 12 divisors (see below), whose sum is σ = 71679891492. Its totient is φ = 52283243040.

The previous prime is 61308336311. The next prime is 61308336319. The reversal of 61308336313 is 31363380316.

61308336313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54218191104 + 7090145209 = 232848^2 + 84203^2 .

It is not a de Polignac number, because 61308336313 - 2¹ = 61308336311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61308336311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3165958 + ... + 3185263.

It is an arithmetic number, because the mean of its divisors is an integer number (5973324291).

Almost surely, 2^61308336313 is an apocalyptic number.

It is an amenable number.

61308336313 is a deficient number, since it is larger than the sum of its proper divisors (10371555179).

61308336313 is a wasteful number, since it uses less digits than its factorization.

61308336313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351432 (or 6351425 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 61308336313 in words is "sixty-one billion, three hundred eight million, three hundred thirty-six thousand, three hundred thirteen".