20475343320 has 64 divisors (see below), whose sum is σ = 65039332320. Its totient is φ = 5138909184.

The previous prime is 20475343249. The next prime is 20475343321. The reversal of 20475343320 is 2334357402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475343321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016427 + ... + 5020506.

Almost surely, 2^20475343320 is an apocalyptic number.

20475343320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20475343320 is an abundant number, since it is smaller than the sum of its proper divisors (44563989000).

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

20475343320 is a wasteful number, since it uses less digits than its factorization.

20475343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10036964 (or 10036960 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 33.

The spelling of 20475343320 in words is "twenty billion, four hundred seventy-five million, three hundred forty-three thousand, three hundred twenty".