20472664044 has 96 divisors (see below), whose sum is σ = 57531995136. Its totient is φ = 5539564800.

The previous prime is 20472664019. The next prime is 20472664097. The reversal of 20472664044 is 44046627402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20472663993 and 20472664011.

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, 142674 + ... + 247590.

It is an arithmetic number, because the mean of its divisors is an integer number (599291616).

Almost surely, 2^20472664044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20472664044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28765997568).

20472664044 is an abundant number, since it is smaller than the sum of its proper divisors (37059331092).

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

20472664044 is a wasteful number, since it uses less digits than its factorization.

20472664044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105055 (or 105053 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 39.

The spelling of 20472664044 in words is "twenty billion, four hundred seventy-two million, six hundred sixty-four thousand, forty-four".