20440165735 has 16 divisors (see below), whose sum is σ = 27621199872. Its totient is φ = 14386039200.

The previous prime is 20440165723. The next prime is 20440165751. The reversal of 20440165735 is 53756104402.

It is not a de Polignac number, because 20440165735 - 2⁵ = 20440165703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20440165694 and 20440165703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5992479 + ... + 5995888.

It is an arithmetic number, because the mean of its divisors is an integer number (1726324992).

Almost surely, 2^20440165735 is an apocalyptic number.

20440165735 is a deficient number, since it is larger than the sum of its proper divisors (7181034137).

20440165735 is a wasteful number, since it uses less digits than its factorization.

20440165735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988414.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 20440165735 in words is "twenty billion, four hundred forty million, one hundred sixty-five thousand, seven hundred thirty-five".