20443522629 has 4 divisors (see below), whose sum is σ = 27258030176. Its totient is φ = 13629015084.

The previous prime is 20443522591. The next prime is 20443522639. The reversal of 20443522629 is 92622534402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20443522629 - 2⁹ = 20443522117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443522639) 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, 3407253769 + ... + 3407253774.

It is an arithmetic number, because the mean of its divisors is an integer number (6814507544).

Almost surely, 2^20443522629 is an apocalyptic number.

It is an amenable number.

20443522629 is a deficient number, since it is larger than the sum of its proper divisors (6814507547).

20443522629 is an equidigital number, since it uses as much as digits as its factorization.

20443522629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814507546.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 20443522629 in words is "twenty billion, four hundred forty-three million, five hundred twenty-two thousand, six hundred twenty-nine".