20563161124 has 12 divisors (see below), whose sum is σ = 39256944048. Its totient is φ = 9346891400.

The previous prime is 20563161097. The next prime is 20563161131. The reversal of 20563161124 is 42116136502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233672242 + ... + 233672329.

It is an arithmetic number, because the mean of its divisors is an integer number (3271412004).

Almost surely, 2^20563161124 is an apocalyptic number.

It is an amenable number.

20563161124 is a deficient number, since it is larger than the sum of its proper divisors (18693782924).

20563161124 is a wasteful number, since it uses less digits than its factorization.

20563161124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467344586 (or 467344584 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 20563161124 its reverse (42116136502), we get a palindrome (62679297626).

The spelling of 20563161124 in words is "twenty billion, five hundred sixty-three million, one hundred sixty-one thousand, one hundred twenty-four".