61316555561317 has 16 divisors (see below), whose sum is σ = 72537422509440. Its totient is φ = 50713275517632.

The previous prime is 61316555561269. The next prime is 61316555561323. The reversal of 61316555561317 is 71316555561316.

It is not a de Polignac number, because 61316555561317 - 2⁷ = 61316555561189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61316555861317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93303063 + ... + 93957940.

It is an arithmetic number, because the mean of its divisors is an integer number (4533588906840).

Almost surely, 2^{61316555561317} is an apocalyptic number.

It is an amenable number.

61316555561317 is a deficient number, since it is larger than the sum of its proper divisors (11220866948123).

61316555561317 is a wasteful number, since it uses less digits than its factorization.

61316555561317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187262652.

The product of its digits is 8505000, while the sum is 55.

Subtracting 61316555561317 from its reverse (71316555561316), we obtain a palindrome (9999999999999).

The spelling of 61316555561317 in words is "sixty-one trillion, three hundred sixteen billion, five hundred fifty-five million, five hundred sixty-one thousand, three hundred seventeen".