20600644000 has 48 divisors (see below), whose sum is σ = 50615792136. Its totient is φ = 8240256000.

The previous prime is 20600643989. The next prime is 20600644021. The reversal of 20600644000 is 44600602.

It can be written as a sum of positive squares in 4 ways, for example, as 4515302416 + 16085341584 = 67196^2 + 126828^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2571081 + ... + 2579080.

Almost surely, 2^20600644000 is an apocalyptic number.

20600644000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20600644000 is an abundant number, since it is smaller than the sum of its proper divisors (30015148136).

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

20600644000 is an equidigital number, since it uses as much as digits as its factorization.

20600644000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150186 (or 5150168 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The spelling of 20600644000 in words is "twenty billion, six hundred million, six hundred forty-four thousand".