122789029679 has 4 divisors (see below), whose sum is σ = 122873888784. Its totient is φ = 122704170576.

The previous prime is 122789029673. The next prime is 122789029697. The reversal of 122789029679 is 976920987221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122789029679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122789029673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42427382 + ... + 42430275.

It is an arithmetic number, because the mean of its divisors is an integer number (30718472196).

Almost surely, 2^122789029679 is an apocalyptic number.

122789029679 is a deficient number, since it is larger than the sum of its proper divisors (84859105).

122789029679 is an equidigital number, since it uses as much as digits as its factorization.

122789029679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84859104.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 122789029679 in words is "one hundred twenty-two billion, seven hundred eighty-nine million, twenty-nine thousand, six hundred seventy-nine".