20980640299 has 8 divisors (see below), whose sum is σ = 21102120000. Its totient is φ = 20859208392.

The previous prime is 20980640297. The next prime is 20980640363. The reversal of 20980640299 is 99204608902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20980640299 - 2¹ = 20980640297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20980640293) 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, 1248052 + ... + 1264750.

It is an arithmetic number, because the mean of its divisors is an integer number (2637765000).

Almost surely, 2^20980640299 is an apocalyptic number.

20980640299 is a deficient number, since it is larger than the sum of its proper divisors (121479701).

20980640299 is a wasteful number, since it uses less digits than its factorization.

20980640299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23897.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 20980640299 in words is "twenty billion, nine hundred eighty million, six hundred forty thousand, two hundred ninety-nine".