20471145308 has 12 divisors (see below), whose sum is σ = 37382091600. Its totient is φ = 9790547712.

The previous prime is 20471145287. The next prime is 20471145329. The reversal of 20471145308 is 80354117402.

It is an interprime number because it is at equal distance from previous prime (20471145287) and next prime (20471145329).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111256133 + ... + 111256316.

It is an arithmetic number, because the mean of its divisors is an integer number (3115174300).

Almost surely, 2^20471145308 is an apocalyptic number.

It is an amenable number.

20471145308 is a deficient number, since it is larger than the sum of its proper divisors (16910946292).

20471145308 is a wasteful number, since it uses less digits than its factorization.

20471145308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222512476 (or 222512474 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 20471145308 in words is "twenty billion, four hundred seventy-one million, one hundred forty-five thousand, three hundred eight".