20703397632 has 144 divisors (see below), whose sum is σ = 56455999488. Its totient is φ = 6732943360.

The previous prime is 20703397591. The next prime is 20703397669. The reversal of 20703397632 is 23679330702.

It is a super-3 number, since 3×20703397632³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7773133 + ... + 7775795.

It is an arithmetic number, because the mean of its divisors is an integer number (392055552).

Almost surely, 2^20703397632 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 20703397632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28227999744).

20703397632 is an abundant number, since it is smaller than the sum of its proper divisors (35752601856).

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

20703397632 is a wasteful number, since it uses less digits than its factorization.

20703397632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 2912 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 42.

The spelling of 20703397632 in words is "twenty billion, seven hundred three million, three hundred ninety-seven thousand, six hundred thirty-two".