20840224467 has 4 divisors (see below), whose sum is σ = 27786965960. Its totient is φ = 13893482976.

The previous prime is 20840224451. The next prime is 20840224481. The reversal of 20840224467 is 76442204802.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20840224467 - 2⁴ = 20840224451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20840224487) 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, 3473370742 + ... + 3473370747.

It is an arithmetic number, because the mean of its divisors is an integer number (6946741490).

Almost surely, 2^20840224467 is an apocalyptic number.

20840224467 is a deficient number, since it is larger than the sum of its proper divisors (6946741493).

20840224467 is an equidigital number, since it uses as much as digits as its factorization.

20840224467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946741492.

The product of its (nonzero) digits is 172032, while the sum is 39.

The spelling of 20840224467 in words is "twenty billion, eight hundred forty million, two hundred twenty-four thousand, four hundred sixty-seven".