20445032229 has 4 divisors (see below), whose sum is σ = 27260042976. Its totient is φ = 13630021484.

The previous prime is 20445032183. The next prime is 20445032249. The reversal of 20445032229 is 92223054402.

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 a cyclic number.

It is not a de Polignac number, because 20445032229 - 2¹⁷ = 20444901157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20445032229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445032249) 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, 3407505369 + ... + 3407505374.

It is an arithmetic number, because the mean of its divisors is an integer number (6815010744).

Almost surely, 2^20445032229 is an apocalyptic number.

It is an amenable number.

20445032229 is a deficient number, since it is larger than the sum of its proper divisors (6815010747).

20445032229 is an equidigital number, since it uses as much as digits as its factorization.

20445032229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815010746.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 20445032229 in words is "twenty billion, four hundred forty-five million, thirty-two thousand, two hundred twenty-nine".