20402433123232 has 24 divisors (see below), whose sum is σ = 42530071989636. Its totient is φ = 9601144998912.

The previous prime is 20402433123203. The next prime is 20402433123299. The reversal of 20402433123232 is 23232133420402.

It can be written as a sum of positive squares in 2 ways, for example, as 16356880164496 + 4045552958736 = 4044364^2 + 2011356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20402433123194 and 20402433123203.

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, 18752235783 + ... + 18752236870.

Almost surely, 2^{20402433123232} is an apocalyptic number.

It is an amenable number.

20402433123232 is an abundant number, since it is smaller than the sum of its proper divisors (22127638866404).

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

20402433123232 is a wasteful number, since it uses less digits than its factorization.

20402433123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37504472680 (or 37504472672 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 20402433123232 its reverse (23232133420402), we get a palindrome (43634566543634).

The spelling of 20402433123232 in words is "twenty trillion, four hundred two billion, four hundred thirty-three million, one hundred twenty-three thousand, two hundred thirty-two".