20440421326 has 16 divisors (see below), whose sum is σ = 33086411568. Its totient is φ = 9414820800.

The previous prime is 20440421269. The next prime is 20440421341. The reversal of 20440421326 is 62312404402.

It is a junction number, because it is equal to n+sod(n) for n = 20440421294 and 20440421303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787815 + ... + 813346.

It is an arithmetic number, because the mean of its divisors is an integer number (2067900723).

Almost surely, 2^20440421326 is an apocalyptic number.

20440421326 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20440421326 is a deficient number, since it is larger than the sum of its proper divisors (12645990242).

20440421326 is a wasteful number, since it uses less digits than its factorization.

20440421326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601667.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20440421326 its reverse (62312404402), we get a palindrome (82752825728).

The spelling of 20440421326 in words is "twenty billion, four hundred forty million, four hundred twenty-one thousand, three hundred twenty-six".