20444262604406 has 16 divisors (see below), whose sum is σ = 30755617295760. Its totient is φ = 10192391796960.

The previous prime is 20444262604369. The next prime is 20444262604427. The reversal of 20444262604406 is 60440626244402.

It is a super-2 number, since 2×20444262604406² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26032976 + ... + 26806796.

It is an arithmetic number, because the mean of its divisors is an integer number (1922226080985).

Almost surely, 2^{20444262604406} is an apocalyptic number.

20444262604406 is a deficient number, since it is larger than the sum of its proper divisors (10311354691354).

20444262604406 is a wasteful number, since it uses less digits than its factorization.

20444262604406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812239.

The product of its (nonzero) digits is 1769472, while the sum is 44.

Adding to 20444262604406 its reverse (60440626244402), we get a palindrome (80884888848808).

The spelling of 20444262604406 in words is "twenty trillion, four hundred forty-four billion, two hundred sixty-two million, six hundred four thousand, four hundred six".