122782138448 has 20 divisors (see below), whose sum is σ = 237895824660. Its totient is φ = 61389667584.

The previous prime is 122782138417. The next prime is 122782138463. The reversal of 122782138448 is 844831287221.

It can be written as a sum of positive squares in 2 ways, for example, as 15573043264 + 107209095184 = 124792^2 + 327428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122782138396 and 122782138405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347386 + ... + 1435622.

It is an arithmetic number, because the mean of its divisors is an integer number (11894791233).

Almost surely, 2^122782138448 is an apocalyptic number.

It is an amenable number.

122782138448 is a deficient number, since it is larger than the sum of its proper divisors (115113686212).

122782138448 is an equidigital number, since it uses as much as digits as its factorization.

122782138448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175214 (or 175208 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 50.

The spelling of 122782138448 in words is "one hundred twenty-two billion, seven hundred eighty-two million, one hundred thirty-eight thousand, four hundred forty-eight".