20123243336 has 32 divisors (see below), whose sum is σ = 43125795840. Its totient is φ = 8623335168.

The previous prime is 20123243303. The next prime is 20123243351. The reversal of 20123243336 is 63334232102.

It is a junction number, because it is equal to n+sod(n) for n = 20123243299 and 20123243308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981785 + ... + 1002071.

It is an arithmetic number, because the mean of its divisors is an integer number (1347681120).

Almost surely, 2^20123243336 is an apocalyptic number.

It is an amenable number.

20123243336 is an abundant number, since it is smaller than the sum of its proper divisors (23002552504).

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

20123243336 is a wasteful number, since it uses less digits than its factorization.

20123243336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38013 (or 38009 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 20123243336 its reverse (63334232102), we get a palindrome (83457475438).

The spelling of 20123243336 in words is "twenty billion, one hundred twenty-three million, two hundred forty-three thousand, three hundred thirty-six".