20352321435440 has 20 divisors (see below), whose sum is σ = 47319147337584. Its totient is φ = 8140928574144.

The previous prime is 20352321435403. The next prime is 20352321435443. The reversal of 20352321435440 is 4453412325302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×20352321435440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20352321435394 and 20352321435403.

It is not an unprimeable number, because it can be changed into a prime (20352321435443) 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, 127202008892 + ... + 127202009051.

Almost surely, 2^{20352321435440} is an apocalyptic number.

20352321435440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20352321435440 is an abundant number, since it is smaller than the sum of its proper divisors (26966825902144).

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

20352321435440 is a wasteful number, since it uses less digits than its factorization.

20352321435440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254404017956 (or 254404017950 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

The spelling of 20352321435440 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty-one million, four hundred thirty-five thousand, four hundred forty".