20471145307 has 16 divisors (see below), whose sum is σ = 21197232000. Its totient is φ = 19756224000.

The previous prime is 20471145287. The next prime is 20471145329. The reversal of 20471145307 is 70354117402.

It is a cyclic number.

It is not a de Polignac number, because 20471145307 - 2²⁷ = 20336927579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20471145397) 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, 8276623 + ... + 8279095.

It is an arithmetic number, because the mean of its divisors is an integer number (1324827000).

Almost surely, 2^20471145307 is an apocalyptic number.

20471145307 is a deficient number, since it is larger than the sum of its proper divisors (726086693).

20471145307 is a wasteful number, since it uses less digits than its factorization.

20471145307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 20471145307 in words is "twenty billion, four hundred seventy-one million, one hundred forty-five thousand, three hundred seven".