20423355032 has 16 divisors (see below), whose sum is σ = 38295312000. Its totient is φ = 10211271840.

The previous prime is 20423355031. The next prime is 20423355047. The reversal of 20423355032 is 23055332402.

It is a super-2 number, since 2×20423355032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20423354986 and 20423355004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423355031) 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, 343682 + ... + 398702.

It is an arithmetic number, because the mean of its divisors is an integer number (2393457000).

Almost surely, 2^20423355032 is an apocalyptic number.

It is an amenable number.

20423355032 is a deficient number, since it is larger than the sum of its proper divisors (17871956968).

20423355032 is a wasteful number, since it uses less digits than its factorization.

20423355032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101426 (or 101422 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

Adding to 20423355032 its reverse (23055332402), we get a palindrome (43478687434).

The spelling of 20423355032 in words is "twenty billion, four hundred twenty-three million, three hundred fifty-five thousand, thirty-two".