20203646308608 has 144 divisors (see below), whose sum is σ = 61527079111680. Its totient is φ = 5765489092608.

The previous prime is 20203646308541. The next prime is 20203646308631. The reversal of 20203646308608 is 80680364630202.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173813 + ... + 6718091.

It is an arithmetic number, because the mean of its divisors is an integer number (427271382720).

Almost surely, 2^{20203646308608} is an apocalyptic number.

20203646308608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20203646308608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30763539555840).

20203646308608 is an abundant number, since it is smaller than the sum of its proper divisors (41323432803072).

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

20203646308608 is an equidigital number, since it uses as much as digits as its factorization.

20203646308608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545132 (or 4545118 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 20203646308608 in words is "twenty trillion, two hundred three billion, six hundred forty-six million, three hundred eight thousand, six hundred eight".