20440375752 has 32 divisors (see below), whose sum is σ = 51299791200. Its totient is φ = 6786945024.

The previous prime is 20440375723. The next prime is 20440375771. The reversal of 20440375752 is 25757304402.

It is a self number, because there is not a number n which added to its sum of digits gives 20440375752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650802 + ... + 1663137.

It is an arithmetic number, because the mean of its divisors is an integer number (1603118475).

Almost surely, 2^20440375752 is an apocalyptic number.

It is an amenable number.

20440375752 is an abundant number, since it is smaller than the sum of its proper divisors (30859415448).

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

20440375752 is a wasteful number, since it uses less digits than its factorization.

20440375752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314205 (or 3314201 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 39.

The spelling of 20440375752 in words is "twenty billion, four hundred forty million, three hundred seventy-five thousand, seven hundred fifty-two".