20400322030432 has 24 divisors (see below), whose sum is σ = 40177534723200. Its totient is φ = 10196503688064.

The previous prime is 20400322030421. The next prime is 20400322030463. The reversal of 20400322030432 is 23403022300402.

It is a junction number, because it is equal to n+sod(n) for n = 20400322030397 and 20400322030406.

It is a congruent number.

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, 114200832 + ... + 114379327.

It is an arithmetic number, because the mean of its divisors is an integer number (1674063946800).

Almost surely, 2^{20400322030432} is an apocalyptic number.

It is an amenable number.

20400322030432 is a deficient number, since it is larger than the sum of its proper divisors (19777212692768).

20400322030432 is a wasteful number, since it uses less digits than its factorization.

20400322030432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228582958 (or 228582950 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 20400322030432 its reverse (23403022300402), we get a palindrome (43803344330834).

The spelling of 20400322030432 in words is "twenty trillion, four hundred billion, three hundred twenty-two million, thirty thousand, four hundred thirty-two".