20744444433 has 8 divisors (see below), whose sum is σ = 27661513888. Its totient is φ = 13828502304.

The previous prime is 20744444431. The next prime is 20744444447. The reversal of 20744444433 is 33444444702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20744444433 - 2¹ = 20744444431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20744444391 and 20744444400.

It is not an unprimeable number, because it can be changed into a prime (20744444431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237916 + ... + 313197.

It is an arithmetic number, because the mean of its divisors is an integer number (3457689236).

Almost surely, 2^20744444433 is an apocalyptic number.

It is an amenable number.

20744444433 is a deficient number, since it is larger than the sum of its proper divisors (6917069455).

20744444433 is a wasteful number, since it uses less digits than its factorization.

20744444433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563663.

The product of its (nonzero) digits is 516096, while the sum is 39.

The spelling of 20744444433 in words is "twenty billion, seven hundred forty-four million, four hundred forty-four thousand, four hundred thirty-three".