20452323642431 has 8 divisors (see below), whose sum is σ = 20772671449920. Its totient is φ = 20133512275968.

The previous prime is 20452323642407. The next prime is 20452323642437. The reversal of 20452323642431 is 13424632325402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20452323642431 - 2³⁰ = 20451249900607 is a prime.

It is a super-2 number, since 2×20452323642431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452323642437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384083426 + ... + 384136671.

It is an arithmetic number, because the mean of its divisors is an integer number (2596583931240).

Almost surely, 2^{20452323642431} is an apocalyptic number.

20452323642431 is a deficient number, since it is larger than the sum of its proper divisors (320347807489).

20452323642431 is an equidigital number, since it uses as much as digits as its factorization.

20452323642431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768220513.

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 20452323642431 its reverse (13424632325402), we get a palindrome (33876955967833).

The spelling of 20452323642431 in words is "twenty trillion, four hundred fifty-two billion, three hundred twenty-three million, six hundred forty-two thousand, four hundred thirty-one".