20868730563052 has 12 divisors (see below), whose sum is σ = 36596521241280. Its totient is φ = 10412581636976.

The previous prime is 20868730563029. The next prime is 20868730563053. The reversal of 20868730563052 is 25036503786802.

It is a junction number, because it is equal to n+sod(n) for n = 20868730562984 and 20868730563002.

It is not an unprimeable number, because it can be changed into a prime (20868730563053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5445908983 + ... + 5445912814.

It is an arithmetic number, because the mean of its divisors is an integer number (3049710103440).

Almost surely, 2^{20868730563052} is an apocalyptic number.

It is an amenable number.

20868730563052 is a deficient number, since it is larger than the sum of its proper divisors (15727790678228).

20868730563052 is a wasteful number, since it uses less digits than its factorization.

20868730563052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891822280 (or 10891822278 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 20868730563052 in words is "twenty trillion, eight hundred sixty-eight billion, seven hundred thirty million, five hundred sixty-three thousand, fifty-two".