20331103645546 has 16 divisors (see below), whose sum is σ = 30792988819008. Its totient is φ = 10066775637600.

The previous prime is 20331103645483. The next prime is 20331103645627. The reversal of 20331103645546 is 64554630113302.

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, 31129081 + ... + 31775491.

It is an arithmetic number, because the mean of its divisors is an integer number (1924561801188).

Almost surely, 2^{20331103645546} is an apocalyptic number.

20331103645546 is a deficient number, since it is larger than the sum of its proper divisors (10461885173462).

20331103645546 is a wasteful number, since it uses less digits than its factorization.

20331103645546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799197.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 20331103645546 its reverse (64554630113302), we get a palindrome (84885733758848).

The spelling of 20331103645546 in words is "twenty trillion, three hundred thirty-one billion, one hundred three million, six hundred forty-five thousand, five hundred forty-six".