20004503145644 has 6 divisors (see below), whose sum is σ = 35007880504884. Its totient is φ = 10002251572820.

The previous prime is 20004503145607. The next prime is 20004503145661. The reversal of 20004503145644 is 44654130540002.

It is a super-2 number, since 2×20004503145644² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20004503145598 and 20004503145607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500562893202 + ... + 2500562893209.

It is an arithmetic number, because the mean of its divisors is an integer number (5834646750814).

Almost surely, 2^{20004503145644} is an apocalyptic number.

It is an amenable number.

20004503145644 is a deficient number, since it is larger than the sum of its proper divisors (15003377359240).

20004503145644 is a wasteful number, since it uses less digits than its factorization.

20004503145644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001125786415 (or 5001125786413 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 20004503145644 its reverse (44654130540002), we get a palindrome (64658633685646).

The spelling of 20004503145644 in words is "twenty trillion, four billion, five hundred three million, one hundred forty-five thousand, six hundred forty-four".