20737430016 has 320 divisors, whose sum is σ = 60056156160. Its totient is φ = 6342082560.

The previous prime is 20737429969. The next prime is 20737430023. The reversal of 20737430016 is 61003473702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149190075 + ... + 149190213.

It is an arithmetic number, because the mean of its divisors is an integer number (187675488).

Almost surely, 2^20737430016 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 20737430016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30028078080).

20737430016 is an abundant number, since it is smaller than the sum of its proper divisors (39318726144).

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

20737430016 is a wasteful number, since it uses less digits than its factorization.

20737430016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 20737430016 in words is "twenty billion, seven hundred thirty-seven million, four hundred thirty thousand, sixteen".