20363163642 has 40 divisors (see below), whose sum is σ = 45810448992. Its totient is φ = 6760665000.

The previous prime is 20363163641. The next prime is 20363163673. The reversal of 20363163642 is 24636136302.

20363163642 is a `hidden beast` number, since 2 + 0 + 3 + 6 + 3 + 1 + 6 + 3 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20363163597 and 20363163606.

It is not an unprimeable number, because it can be changed into a prime (20363163641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 209734 + ... + 291057.

Almost surely, 2^20363163642 is an apocalyptic number.

20363163642 is an abundant number, since it is smaller than the sum of its proper divisors (25447285350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20363163642 is a wasteful number, since it uses less digits than its factorization.

20363163642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501056 (or 501047 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

Adding to 20363163642 its reverse (24636136302), we get a palindrome (44999299944).

The spelling of 20363163642 in words is "twenty billion, three hundred sixty-three million, one hundred sixty-three thousand, six hundred forty-two".