20006438130 has 64 divisors (see below), whose sum is σ = 60972007680. Its totient is φ = 4572899712.

The previous prime is 20006438077. The next prime is 20006438147. The reversal of 20006438130 is 3183460002.

It is a happy number.

20006438130 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 643 + 8 + 13 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20006438094 and 20006438103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5290819 + ... + 5294598.

It is an arithmetic number, because the mean of its divisors is an integer number (952687620).

Almost surely, 2^20006438130 is an apocalyptic number.

20006438130 is an abundant number, since it is smaller than the sum of its proper divisors (40965569550).

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

20006438130 is a wasteful number, since it uses less digits than its factorization.

20006438130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585440 (or 10585434 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 20006438130 its reverse (3183460002), we get a palindrome (23189898132).

The spelling of 20006438130 in words is "twenty billion, six million, four hundred thirty-eight thousand, one hundred thirty".