20244043545 has 48 divisors (see below), whose sum is σ = 36090692736. Its totient is φ = 9680774400.

The previous prime is 20244043511. The next prime is 20244043549. The reversal of 20244043545 is 54534044202.

It is not a de Polignac number, because 20244043545 - 2⁹ = 20244043033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20244043549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56100 + ... + 208890.

It is an arithmetic number, because the mean of its divisors is an integer number (751889432).

Almost surely, 2^20244043545 is an apocalyptic number.

It is an amenable number.

20244043545 is a deficient number, since it is larger than the sum of its proper divisors (15846649191).

20244043545 is a wasteful number, since it uses less digits than its factorization.

20244043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152894 (or 152883 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 20244043545 its reverse (54534044202), we get a palindrome (74778087747).

The spelling of 20244043545 in words is "twenty billion, two hundred forty-four million, forty-three thousand, five hundred forty-five".