20216185360 has 80 divisors (see below), whose sum is σ = 55569657600. Its totient is φ = 6692249088.

The previous prime is 20216185349. The next prime is 20216185361. The reversal of 20216185360 is 6358161202.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (20216185361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606180 + ... + 638659.

It is an arithmetic number, because the mean of its divisors is an integer number (694620720).

Almost surely, 2^20216185360 is an apocalyptic number.

20216185360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20216185360 is an abundant number, since it is smaller than the sum of its proper divisors (35353472240).

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

20216185360 is a wasteful number, since it uses less digits than its factorization.

20216185360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244888 (or 1244882 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 20216185360 in words is "twenty billion, two hundred sixteen million, one hundred eighty-five thousand, three hundred sixty".