20344161442426 has 4 divisors (see below), whose sum is σ = 30516242163642. Its totient is φ = 10172080721212.

The previous prime is 20344161442399. The next prime is 20344161442481. The reversal of 20344161442426 is 62424416144302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20233038553225 + 111122889201 = 4498115^2 + 333351^2 .

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 as a sum of consecutive naturals, namely, 5086040360605 + ... + 5086040360608.

Almost surely, 2^{20344161442426} is an apocalyptic number.

20344161442426 is a deficient number, since it is larger than the sum of its proper divisors (10172080721216).

20344161442426 is a wasteful number, since it uses less digits than its factorization.

20344161442426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172080721215.

The product of its (nonzero) digits is 884736, while the sum is 43.

Adding to 20344161442426 its reverse (62424416144302), we get a palindrome (82768577586728).

The spelling of 20344161442426 in words is "twenty trillion, three hundred forty-four billion, one hundred sixty-one million, four hundred forty-two thousand, four hundred twenty-six".