123682052778 has 32 divisors (see below), whose sum is σ = 255365332992. Its totient is φ = 39894039600.

The previous prime is 123682052777. The next prime is 123682052789. The reversal of 123682052778 is 877250286321.

It is a self number, because there is not a number n which added to its sum of digits gives 123682052778.

It is not an unprimeable number, because it can be changed into a prime (123682052777) 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 15 ways as a sum of consecutive naturals, for example, 3073375 + ... + 3113357.

It is an arithmetic number, because the mean of its divisors is an integer number (7980166656).

Almost surely, 2^123682052778 is an apocalyptic number.

123682052778 is an abundant number, since it is smaller than the sum of its proper divisors (131683280214).

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

123682052778 is a wasteful number, since it uses less digits than its factorization.

123682052778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56650.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 123682052778 in words is "one hundred twenty-three billion, six hundred eighty-two million, fifty-two thousand, seven hundred seventy-eight".