20440004402 has 8 divisors (see below), whose sum is σ = 31717248300. Its totient is φ = 9867588304.

The previous prime is 20440004399. The next prime is 20440004423.

20440004402 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 19683809401 + 756195001 = 140299^2 + 27499^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176206877 + ... + 176206992.

Almost surely, 2^20440004402 is an apocalyptic number.

20440004402 is a deficient number, since it is larger than the sum of its proper divisors (11277243898).

20440004402 is a wasteful number, since it uses less digits than its factorization.

20440004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352413900.

The product of its (nonzero) digits is 1024, while the sum is 20.

It can be divided in two parts, 2044000 and 4402, that added together give a palindrome (2048402).

The spelling of 20440004402 in words is "twenty billion, four hundred forty million, four thousand, four hundred two".