20663048871 has 36 divisors (see below), whose sum is σ = 31881480904. Its totient is φ = 12893126400.

The previous prime is 20663048863. The next prime is 20663048909. The reversal of 20663048871 is 17884036602.

20663048871 is a `hidden beast` number, since 2 + 0 + 6 + 630 + 4 + 8 + 8 + 7 + 1 = 666.

It is not a de Polignac number, because 20663048871 - 2³ = 20663048863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20663046871) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 448836 + ... + 492726.

Almost surely, 2^20663048871 is an apocalyptic number.

20663048871 is a deficient number, since it is larger than the sum of its proper divisors (11218432033).

20663048871 is a wasteful number, since it uses less digits than its factorization.

20663048871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44112 (or 44092 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 20663048871 in words is "twenty billion, six hundred sixty-three million, forty-eight thousand, eight hundred seventy-one".