122534786638 has 8 divisors (see below), whose sum is σ = 200511469080. Its totient is φ = 55697630280.

The previous prime is 122534786503. The next prime is 122534786639. The reversal of 122534786638 is 836687435221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122534786639) 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 3 ways as a sum of consecutive naturals, for example, 2784881493 + ... + 2784881536.

It is an arithmetic number, because the mean of its divisors is an integer number (25063933635).

Almost surely, 2^122534786638 is an apocalyptic number.

122534786638 is a deficient number, since it is larger than the sum of its proper divisors (77976682442).

122534786638 is a wasteful number, since it uses less digits than its factorization.

122534786638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569763042.

The product of its digits is 11612160, while the sum is 55.

The spelling of 122534786638 in words is "one hundred twenty-two billion, five hundred thirty-four million, seven hundred eighty-six thousand, six hundred thirty-eight".