66501007122 has 32 divisors (see below), whose sum is σ = 145135503360. Its totient is φ = 20145931920.

The previous prime is 66501007117. The next prime is 66501007141. The reversal of 66501007122 is 22170010566.

It is a self number, because there is not a number n which added to its sum of digits gives 66501007122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83079 + ... + 374037.

It is an arithmetic number, because the mean of its divisors is an integer number (4535484480).

Almost surely, 2^66501007122 is an apocalyptic number.

66501007122 is an abundant number, since it is smaller than the sum of its proper divisors (78634496238).

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

66501007122 is a wasteful number, since it uses less digits than its factorization.

66501007122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294438.

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 66501007122 its reverse (22170010566), we get a palindrome (88671017688).

The spelling of 66501007122 in words is "sixty-six billion, five hundred one million, seven thousand, one hundred twenty-two".