20476542072 has 128 divisors (see below), whose sum is σ = 60152601600. Its totient is φ = 5685977088.

The previous prime is 20476542067. The next prime is 20476542083. The reversal of 20476542072 is 27024567402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20476542072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9689688 + ... + 9691800.

It is an arithmetic number, because the mean of its divisors is an integer number (469942200).

Almost surely, 2^20476542072 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 20476542072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30076300800).

20476542072 is an abundant number, since it is smaller than the sum of its proper divisors (39676059528).

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

20476542072 is a wasteful number, since it uses less digits than its factorization.

20476542072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 20476542072 in words is "twenty billion, four hundred seventy-six million, five hundred forty-two thousand, seventy-two".