20470219816 has 16 divisors (see below), whose sum is σ = 38385721440. Its totient is φ = 10234027440.

The previous prime is 20470219813. The next prime is 20470219859. The reversal of 20470219816 is 61891207402.

It is not an unprimeable number, because it can be changed into a prime (20470219813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51916 + ... + 208891.

It is an arithmetic number, because the mean of its divisors is an integer number (2399107590).

Almost surely, 2^20470219816 is an apocalyptic number.

It is an amenable number.

20470219816 is a deficient number, since it is larger than the sum of its proper divisors (17915501624).

20470219816 is a wasteful number, since it uses less digits than its factorization.

20470219816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270624 (or 270620 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 20470219816 in words is "twenty billion, four hundred seventy million, two hundred nineteen thousand, eight hundred sixteen".