20406104472 has 64 divisors (see below), whose sum is σ = 55003898880. Its totient is φ = 6271443072.

The previous prime is 20406104431. The next prime is 20406104491. The reversal of 20406104472 is 27440160402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231363 + ... + 307149.

It is an arithmetic number, because the mean of its divisors is an integer number (859435920).

Almost surely, 2^20406104472 is an apocalyptic number.

It is an amenable number.

20406104472 is an abundant number, since it is smaller than the sum of its proper divisors (34597794408).

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

20406104472 is a wasteful number, since it uses less digits than its factorization.

20406104472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76672 (or 76668 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 20406104472 its reverse (27440160402), we get a palindrome (47846264874).

The spelling of 20406104472 in words is "twenty billion, four hundred six million, one hundred four thousand, four hundred seventy-two".