122065665156 has 36 divisors (see below), whose sum is σ = 309075258492. Its totient is φ = 40619933184.

The previous prime is 122065665151. The next prime is 122065665181. The reversal of 122065665156 is 651566560221.

122065665156 is a `hidden beast` number, since 12 + 2 + 0 + 65 + 66 + 515 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33984922500 + 88080742656 = 184350^2 + 296784^2 .

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

It is not an unprimeable number, because it can be changed into a prime (122065665151) 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 11 ways as a sum of consecutive naturals, for example, 2837601 + ... + 2880296.

It is an arithmetic number, because the mean of its divisors is an integer number (8585423847).

Almost surely, 2^122065665156 is an apocalyptic number.

It is an amenable number.

122065665156 is an abundant number, since it is smaller than the sum of its proper divisors (187009593336).

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

122065665156 is a wasteful number, since it uses less digits than its factorization.

122065665156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5718500 (or 5718495 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 122065665156 in words is "one hundred twenty-two billion, sixty-five million, six hundred sixty-five thousand, one hundred fifty-six".