20828604245 has 16 divisors (see below), whose sum is σ = 25060119552. Its totient is φ = 16619084160.

The previous prime is 20828604193. The next prime is 20828604253. The reversal of 20828604245 is 54240682802.

It is not a de Polignac number, because 20828604245 - 2³² = 16533636949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3280544 + ... + 3286886.

It is an arithmetic number, because the mean of its divisors is an integer number (1566257472).

Almost surely, 2^20828604245 is an apocalyptic number.

It is an amenable number.

20828604245 is a deficient number, since it is larger than the sum of its proper divisors (4231515307).

20828604245 is an equidigital number, since it uses as much as digits as its factorization.

20828604245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7972.

The product of its (nonzero) digits is 245760, while the sum is 41.

The spelling of 20828604245 in words is "twenty billion, eight hundred twenty-eight million, six hundred four thousand, two hundred forty-five".