20830684205604 has 288 divisors, whose sum is σ = 61829694385536. Its totient is φ = 5409077667840.

The previous prime is 20830684205603. The next prime is 20830684205641. The reversal of 20830684205604 is 40650248603802.

It is not an unprimeable number, because it can be changed into a prime (20830684205603) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1137471552 + ... + 1137489864.

Almost surely, 2^{20830684205604} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20830684205604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30914847192768).

20830684205604 is an abundant number, since it is smaller than the sum of its proper divisors (40999010179932).

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

20830684205604 is a wasteful number, since it uses less digits than its factorization.

20830684205604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20635 (or 20626 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 20830684205604 in words is "twenty trillion, eight hundred thirty billion, six hundred eighty-four million, two hundred five thousand, six hundred four".