20440184514449 has 32 divisors (see below), whose sum is σ = 25163243381760. Its totient is φ = 16210951848000.

The previous prime is 20440184514427. The next prime is 20440184514499. The reversal of 20440184514449 is 94441548104402.

It is not a de Polignac number, because 20440184514449 - 2²⁸ = 20439916078993 is a prime.

It is a super-2 number, since 2×20440184514449² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20440184514397 and 20440184514406.

It is not an unprimeable number, because it can be changed into a prime (20440184514499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90825434 + ... + 91050204.

It is an arithmetic number, because the mean of its divisors is an integer number (786351355680).

Almost surely, 2^{20440184514449} is an apocalyptic number.

It is an amenable number.

20440184514449 is a deficient number, since it is larger than the sum of its proper divisors (4723058867311).

20440184514449 is a wasteful number, since it uses less digits than its factorization.

20440184514449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240741.

The product of its (nonzero) digits is 2949120, while the sum is 50.

The spelling of 20440184514449 in words is "twenty trillion, four hundred forty billion, one hundred eighty-four million, five hundred fourteen thousand, four hundred forty-nine".