20743959753216 has 240 divisors, whose sum is σ = 68498692451904. Its totient is φ = 5920125345792.

The previous prime is 20743959753161. The next prime is 20743959753229. The reversal of 20743959753216 is 61235795934702.

20743959753216 is a `hidden beast` number, since 2 + 0 + 7 + 4 + 3 + 9 + 5 + 97 + 532 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28117890 + ... + 28846206.

Almost surely, 2^{20743959753216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20743959753216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34249346225952).

20743959753216 is an abundant number, since it is smaller than the sum of its proper divisors (47754732698688).

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

20743959753216 is an equidigital number, since it uses as much as digits as its factorization.

20743959753216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729231 (or 729212 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 63.

The spelling of 20743959753216 in words is "twenty trillion, seven hundred forty-three billion, nine hundred fifty-nine million, seven hundred fifty-three thousand, two hundred sixteen".