122782105666 has 48 divisors (see below), whose sum is σ = 209094488064. Its totient is φ = 53977176000.

The previous prime is 122782105661. The next prime is 122782105679. The reversal of 122782105666 is 666501287221.

It is not an unprimeable number, because it can be changed into a prime (122782105661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15832846 + ... + 15840598.

It is an arithmetic number, because the mean of its divisors is an integer number (4356135168).

Almost surely, 2^122782105666 is an apocalyptic number.

122782105666 is a deficient number, since it is larger than the sum of its proper divisors (86312382398).

122782105666 is a wasteful number, since it uses less digits than its factorization.

122782105666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919 (or 9908 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 122782105666 in words is "one hundred twenty-two billion, seven hundred eighty-two million, one hundred five thousand, six hundred sixty-six".