122557779148 has 24 divisors (see below), whose sum is σ = 245123649792. Its totient is φ = 52523028624.

The previous prime is 122557779143. The next prime is 122557779191. The reversal of 122557779148 is 841977755221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122557779092 and 122557779101.

It is not an unprimeable number, because it can be changed into a prime (122557779143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159611 + ... + 1260877.

It is an arithmetic number, because the mean of its divisors is an integer number (10213485408).

Almost surely, 2^122557779148 is an apocalyptic number.

It is an amenable number.

122557779148 is an abundant number, since it is smaller than the sum of its proper divisors (122565870644).

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

122557779148 is a wasteful number, since it uses less digits than its factorization.

122557779148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144501 (or 144499 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 58.

The spelling of 122557779148 in words is "one hundred twenty-two billion, five hundred fifty-seven million, seven hundred seventy-nine thousand, one hundred forty-eight".