61360066161 has 40 divisors (see below), whose sum is σ = 93100478240. Its totient is φ = 40265387712.

The previous prime is 61360066151. The next prime is 61360066193. The reversal of 61360066161 is 16166006316.

It is a happy number.

61360066161 is a `hidden beast` number, since 6 + 1 + 36 + 0 + 0 + 6 + 616 + 1 = 666.

It is not a de Polignac number, because 61360066161 - 2⁹ = 61360065649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61360066151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8728530 + ... + 8735556.

It is an arithmetic number, because the mean of its divisors is an integer number (2327511956).

Almost surely, 2^61360066161 is an apocalyptic number.

It is an amenable number.

61360066161 is a deficient number, since it is larger than the sum of its proper divisors (31740412079).

61360066161 is a wasteful number, since it uses less digits than its factorization.

61360066161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715 (or 8706 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 61360066161 in words is "sixty-one billion, three hundred sixty million, sixty-six thousand, one hundred sixty-one".