20703353416064 has 128 divisors (see below), whose sum is σ = 47644936970400. Its totient is φ = 8856362188800.

The previous prime is 20703353416027. The next prime is 20703353416079. The reversal of 20703353416064 is 46061435330702.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416198234 + ... + 416247974.

Almost surely, 2^{20703353416064} 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 20703353416064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23822468485200).

20703353416064 is an abundant number, since it is smaller than the sum of its proper divisors (26941583554336).

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

20703353416064 is a wasteful number, since it uses less digits than its factorization.

20703353416064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67172 (or 67160 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 44.

Adding to 20703353416064 its reverse (46061435330702), we get a palindrome (66764788746766).

The spelling of 20703353416064 in words is "twenty trillion, seven hundred three billion, three hundred fifty-three million, four hundred sixteen thousand, sixty-four".