20016327280 has 40 divisors (see below), whose sum is σ = 46602820800. Its totient is φ = 7995372288.

The previous prime is 20016327263. The next prime is 20016327281. The reversal of 20016327280 is 8272361002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016327281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116475 + ... + 231514.

It is an arithmetic number, because the mean of its divisors is an integer number (1165070520).

Almost surely, 2^20016327280 is an apocalyptic number.

20016327280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20016327280 is an abundant number, since it is smaller than the sum of its proper divisors (26586493520).

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

20016327280 is a wasteful number, since it uses less digits than its factorization.

20016327280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348721 (or 348715 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 20016327280 its reverse (8272361002), we get a palindrome (28288688282).

The spelling of 20016327280 in words is "twenty billion, sixteen million, three hundred twenty-seven thousand, two hundred eighty".