20240203643564 has 24 divisors (see below), whose sum is σ = 36960681397248. Its totient is φ = 9680016328400.

The previous prime is 20240203643557. The next prime is 20240203643579. The reversal of 20240203643564 is 46534630204202.

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, 10951259 + ... + 12665325.

It is an arithmetic number, because the mean of its divisors is an integer number (1540028391552).

Almost surely, 2^{20240203643564} is an apocalyptic number.

It is an amenable number.

20240203643564 is a deficient number, since it is larger than the sum of its proper divisors (16720477753684).

20240203643564 is a wasteful number, since it uses less digits than its factorization.

20240203643564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842445 (or 1842443 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 20240203643564 its reverse (46534630204202), we get a palindrome (66774833847766).

The spelling of 20240203643564 in words is "twenty trillion, two hundred forty billion, two hundred three million, six hundred forty-three thousand, five hundred sixty-four".