20353757730720 has 768 divisors, whose sum is σ = 70473589401600. Its totient is φ = 4920165089280.

The previous prime is 20353757730689. The next prime is 20353757730727. The reversal of 20353757730720 is 2703775735302.

It is not an unprimeable number, because it can be changed into a prime (20353757730727) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6434951859 + ... + 6434955021.

It is an arithmetic number, because the mean of its divisors is an integer number (91762486200).

Almost surely, 2^{20353757730720} is an apocalyptic number.

20353757730720 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 20353757730720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35236794700800).

20353757730720 is an abundant number, since it is smaller than the sum of its proper divisors (50119831670880).

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

20353757730720 is a wasteful number, since it uses less digits than its factorization.

20353757730720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573 (or 3565 counting only the distinct ones).

The product of its (nonzero) digits is 6482700, while the sum is 51.

The spelling of 20353757730720 in words is "twenty trillion, three hundred fifty-three billion, seven hundred fifty-seven million, seven hundred thirty thousand, seven hundred twenty".