20065168320 has 56 divisors (see below), whose sum is σ = 63706912464. Its totient is φ = 5350711296.

The previous prime is 20065168313. The next prime is 20065168351. The reversal of 20065168320 is 2386156002.

It is a super-2 number, since 2×20065168320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10449649 + ... + 10451568.

Almost surely, 2^20065168320 is an apocalyptic number.

20065168320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20065168320 is an abundant number, since it is smaller than the sum of its proper divisors (43641744144).

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

20065168320 is a wasteful number, since it uses less digits than its factorization.

20065168320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20901237 (or 20901227 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20065168320 in words is "twenty billion, sixty-five million, one hundred sixty-eight thousand, three hundred twenty".