122348136779 has 4 divisors (see below), whose sum is σ = 133470694680. Its totient is φ = 111225578880.

The previous prime is 122348136769. The next prime is 122348136793. The reversal of 122348136779 is 977631843221.

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-122348136779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122348136779.

It is not an unprimeable number, because it can be changed into a prime (122348136769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561278934 + ... + 5561278955.

It is an arithmetic number, because the mean of its divisors is an integer number (33367673670).

Almost surely, 2^122348136779 is an apocalyptic number.

122348136779 is a deficient number, since it is larger than the sum of its proper divisors (11122557901).

122348136779 is a wasteful number, since it uses less digits than its factorization.

122348136779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122557900.

The product of its digits is 3048192, while the sum is 53.

The spelling of 122348136779 in words is "one hundred twenty-two billion, three hundred forty-eight million, one hundred thirty-six thousand, seven hundred seventy-nine".