20430470867 has 16 divisors (see below), whose sum is σ = 20982323712. Its totient is φ = 19886549760.

The previous prime is 20430470839. The next prime is 20430470873. The reversal of 20430470867 is 76807403402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430470867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20430470807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4826642 + ... + 4830872.

It is an arithmetic number, because the mean of its divisors is an integer number (1311395232).

Almost surely, 2^20430470867 is an apocalyptic number.

20430470867 is a deficient number, since it is larger than the sum of its proper divisors (551852845).

20430470867 is an equidigital number, since it uses as much as digits as its factorization.

20430470867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 20430470867 in words is "twenty billion, four hundred thirty million, four hundred seventy thousand, eight hundred sixty-seven".