20630536218340 has 192 divisors, whose sum is σ = 48872613371904. Its totient is φ = 7274368899072.

The previous prime is 20630536218329. The next prime is 20630536218353. The reversal of 20630536218340 is 4381263503602.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87380089 + ... + 87615871.

It is an arithmetic number, because the mean of its divisors is an integer number (254544861312).

Almost surely, 2^{20630536218340} is an apocalyptic number.

20630536218340 is a gapful number since it is divisible by the number (20) 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 20630536218340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24436306685952).

20630536218340 is an abundant number, since it is smaller than the sum of its proper divisors (28242077153564).

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

20630536218340 is a wasteful number, since it uses less digits than its factorization.

20630536218340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236066 (or 236064 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 20630536218340 in words is "twenty trillion, six hundred thirty billion, five hundred thirty-six million, two hundred eighteen thousand, three hundred forty".