20471642612 has 12 divisors (see below), whose sum is σ = 35918916096. Its totient is φ = 10209095160.

The previous prime is 20471642599. The next prime is 20471642621. The reversal of 20471642612 is 21624617402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6679814 + ... + 6682877.

It is an arithmetic number, because the mean of its divisors is an integer number (2993243008).

Almost surely, 2^20471642612 is an apocalyptic number.

It is an amenable number.

20471642612 is a deficient number, since it is larger than the sum of its proper divisors (15447273484).

20471642612 is a wasteful number, since it uses less digits than its factorization.

20471642612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13363078 (or 13363076 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 20471642612 in words is "twenty billion, four hundred seventy-one million, six hundred forty-two thousand, six hundred twelve".