20471004188 has 12 divisors (see below), whose sum is σ = 35849025072. Its totient is φ = 10228425600.

The previous prime is 20471004181. The next prime is 20471004227. The reversal of 20471004188 is 88140017402.

It is a super-2 number, since 2×20471004188² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471004181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762613 + ... + 1774188.

It is an arithmetic number, because the mean of its divisors is an integer number (2987418756).

Almost surely, 2^20471004188 is an apocalyptic number.

It is an amenable number.

20471004188 is a deficient number, since it is larger than the sum of its proper divisors (15378020884).

20471004188 is a wasteful number, since it uses less digits than its factorization.

20471004188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538252 (or 3538250 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The spelling of 20471004188 in words is "twenty billion, four hundred seventy-one million, four thousand, one hundred eighty-eight".