20352320431439 has 2 divisors, whose sum is σ = 20352320431440. Its totient is φ = 20352320431438.

The previous prime is 20352320431433. The next prime is 20352320431459. The reversal of 20352320431439 is 93413402325302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20352320431439 - 2³⁶ = 20283600954703 is a prime.

It is a super-2 number, since 2×20352320431439² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20352320431396 and 20352320431405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20352320431433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176160215719 + 10176160215720.

It is an arithmetic number, because the mean of its divisors is an integer number (10176160215720).

Almost surely, 2^{20352320431439} is an apocalyptic number.

20352320431439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20352320431439 is an equidigital number, since it uses as much as digits as its factorization.

20352320431439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 20352320431439 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty million, four hundred thirty-one thousand, four hundred thirty-nine".