20081880321 has 16 divisors (see below), whose sum is σ = 27656982528. Its totient is φ = 12947893200.

The previous prime is 20081880293. The next prime is 20081880331. The reversal of 20081880321 is 12308818002.

It is not a de Polignac number, because 20081880321 - 2⁶ = 20081880257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20081880331) 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, 82266 + ... + 216636.

It is an arithmetic number, because the mean of its divisors is an integer number (1728561408).

Almost surely, 2^20081880321 is an apocalyptic number.

It is an amenable number.

20081880321 is a deficient number, since it is larger than the sum of its proper divisors (7575102207).

20081880321 is a wasteful number, since it uses less digits than its factorization.

20081880321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136012.

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 20081880321 in words is "twenty billion, eighty-one million, eight hundred eighty thousand, three hundred twenty-one".