20218688960 has 28 divisors (see below), whose sum is σ = 48145753848. Its totient is φ = 8087475456.

The previous prime is 20218688929. The next prime is 20218688981. The reversal of 20218688960 is 6988681202.

It is a super-2 number, since 2×20218688960² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20218688899 and 20218688908.

It is a congruent 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, 31591382 + ... + 31592021.

Almost surely, 2^20218688960 is an apocalyptic number.

20218688960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20218688960 is an abundant number, since it is smaller than the sum of its proper divisors (27927064888).

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

20218688960 is an equidigital number, since it uses as much as digits as its factorization.

20218688960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63183420 (or 63183410 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 20218688960 in words is "twenty billion, two hundred eighteen million, six hundred eighty-eight thousand, nine hundred sixty".