61318081316 has 48 divisors (see below), whose sum is σ = 110917078272. Its totient is φ = 29644608000.

The previous prime is 61318081309. The next prime is 61318081333.

61318081316 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 61318081316.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9319820 + ... + 9326396.

It is an arithmetic number, because the mean of its divisors is an integer number (2310772464).

Almost surely, 2^61318081316 is an apocalyptic number.

It is an amenable number.

61318081316 is a deficient number, since it is larger than the sum of its proper divisors (49598996956).

61318081316 is a wasteful number, since it uses less digits than its factorization.

61318081316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220 (or 7218 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

It can be divided in two parts, 613180 and 81316, that added together give a palindrome (694496).

The spelling of 61318081316 in words is "sixty-one billion, three hundred eighteen million, eighty-one thousand, three hundred sixteen".