20839317316 has 6 divisors (see below), whose sum is σ = 36468805310. Its totient is φ = 10419658656.

The previous prime is 20839317299. The next prime is 20839317347. The reversal of 20839317316 is 61371393802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19824640000 + 1014677316 = 140800^2 + 31854^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604914661 + ... + 2604914668.

Almost surely, 2^20839317316 is an apocalyptic number.

It is an amenable number.

20839317316 is a deficient number, since it is larger than the sum of its proper divisors (15629487994).

20839317316 is a wasteful number, since it uses less digits than its factorization.

20839317316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209829333 (or 5209829331 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 20839317316 in words is "twenty billion, eight hundred thirty-nine million, three hundred seventeen thousand, three hundred sixteen".