61117161696 has 36 divisors (see below), whose sum is σ = 173801929392. Its totient is φ = 20372387136.

The previous prime is 61117161691. The next prime is 61117161719. The reversal of 61117161696 is 69616171116.

61117161696 is a `hidden beast` number, since 6 + 11 + 17 + 1 + 616 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61117161691) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 106105896 + ... + 106106471.

It is an arithmetic number, because the mean of its divisors is an integer number (4827831372).

Almost surely, 2^61117161696 is an apocalyptic number.

It is an amenable number.

61117161696 is an abundant number, since it is smaller than the sum of its proper divisors (112684767696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61117161696 is a wasteful number, since it uses less digits than its factorization.

61117161696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212212383 (or 212212372 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The spelling of 61117161696 in words is "sixty-one billion, one hundred seventeen million, one hundred sixty-one thousand, six hundred ninety-six".