122788878878 has 8 divisors (see below), whose sum is σ = 186932323272. Its totient is φ = 60478104456.

The previous prime is 122788878851. The next prime is 122788878881. The reversal of 122788878878 is 878878887221.

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

It is a super-2 number, since 2×122788878878² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 458167325 + ... + 458167592.

It is an arithmetic number, because the mean of its divisors is an integer number (23366540409).

Almost surely, 2^122788878878 is an apocalyptic number.

122788878878 is a deficient number, since it is larger than the sum of its proper divisors (64143444394).

122788878878 is an equidigital number, since it uses as much as digits as its factorization.

122788878878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916334986.

The product of its digits is 359661568, while the sum is 74.

The spelling of 122788878878 in words is "one hundred twenty-two billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, eight hundred seventy-eight".