122785782855 has 32 divisors (see below), whose sum is σ = 207109398528. Its totient is φ = 62024928000.

The previous prime is 122785782841. The next prime is 122785782857. The reversal of 122785782855 is 558287587221.

It is not a de Polignac number, because 122785782855 - 2⁸ = 122785782599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122785782857) 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 31 ways as a sum of consecutive naturals, for example, 2787246 + ... + 2830955.

It is an arithmetic number, because the mean of its divisors is an integer number (6472168704).

Almost surely, 2^122785782855 is an apocalyptic number.

122785782855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122785782855 is a deficient number, since it is larger than the sum of its proper divisors (84323615673).

122785782855 is a wasteful number, since it uses less digits than its factorization.

122785782855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618287.

The product of its digits is 25088000, while the sum is 60.

The spelling of 122785782855 in words is "one hundred twenty-two billion, seven hundred eighty-five million, seven hundred eighty-two thousand, eight hundred fifty-five".