20440553320 has 32 divisors (see below), whose sum is σ = 50172268320. Its totient is φ = 7432928320.

The previous prime is 20440553293. The next prime is 20440553369. The reversal of 20440553320 is 2335504402.

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, 23227462 + ... + 23228341.

It is an arithmetic number, because the mean of its divisors is an integer number (1567883385).

Almost surely, 2^20440553320 is an apocalyptic number.

20440553320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440553320 is an abundant number, since it is smaller than the sum of its proper divisors (29731715000).

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

20440553320 is a wasteful number, since it uses less digits than its factorization.

20440553320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46455825 (or 46455821 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The spelling of 20440553320 in words is "twenty billion, four hundred forty million, five hundred fifty-three thousand, three hundred twenty".