123553936336 has 20 divisors (see below), whose sum is σ = 253467267012. Its totient is φ = 58143028736.

The previous prime is 123553936333. The next prime is 123553936361. The reversal of 123553936336 is 633639355321.

It can be written as a sum of positive squares in 2 ways, for example, as 50156289936 + 73397646400 = 223956^2 + 270920^2 .

It is a super-2 number, since 2×123553936336² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123553936336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123553936333) 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, 227120935 + ... + 227121478.

Almost surely, 2^123553936336 is an apocalyptic number.

123553936336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123553936336 is an abundant number, since it is smaller than the sum of its proper divisors (129913330676).

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

123553936336 is a wasteful number, since it uses less digits than its factorization.

123553936336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454242438 (or 454242432 counting only the distinct ones).

The product of its digits is 3936600, while the sum is 49.

The spelling of 123553936336 in words is "one hundred twenty-three billion, five hundred fifty-three million, nine hundred thirty-six thousand, three hundred thirty-six".