61316555561318 has 24 divisors (see below), whose sum is σ = 95160212116200. Its totient is φ = 29614370792000.

The previous prime is 61316555561269. The next prime is 61316555561323. The reversal of 61316555561318 is 81316555561316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35814968 + ... + 37487931.

It is an arithmetic number, because the mean of its divisors is an integer number (3965008838175).

Almost surely, 2^{61316555561318} is an apocalyptic number.

61316555561318 is a deficient number, since it is larger than the sum of its proper divisors (33843656554882).

61316555561318 is a wasteful number, since it uses less digits than its factorization.

61316555561318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73303144 (or 73303043 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 56.

The spelling of 61316555561318 in words is "sixty-one trillion, three hundred sixteen billion, five hundred fifty-five million, five hundred sixty-one thousand, three hundred eighteen".