20444024757 has 16 divisors (see below), whose sum is σ = 30900551360. Its totient is φ = 11918783232.

The previous prime is 20444024737. The next prime is 20444024761. The reversal of 20444024757 is 75742044402.

It is not a de Polignac number, because 20444024757 - 2⁸ = 20444024501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444024737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13794148 + ... + 13795629.

It is an arithmetic number, because the mean of its divisors is an integer number (1931284460).

Almost surely, 2^20444024757 is an apocalyptic number.

It is an amenable number.

20444024757 is a deficient number, since it is larger than the sum of its proper divisors (10456526603).

20444024757 is a wasteful number, since it uses less digits than its factorization.

20444024757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27589812.

The product of its (nonzero) digits is 250880, while the sum is 39.

The spelling of 20444024757 in words is "twenty billion, four hundred forty-four million, twenty-four thousand, seven hundred fifty-seven".