20796632064 has 308 divisors, whose sum is σ = 67156927936. Its totient is φ = 6395977728.

The previous prime is 20796632063. The next prime is 20796632071. The reversal of 20796632064 is 46023669702.

20796632064 is a `hidden beast` number, since 2 + 0 + 7 + 9 + 6 + 632 + 0 + 6 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (20796632063) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9703377 + ... + 9705519.

Almost surely, 2^20796632064 is an apocalyptic number.

20796632064 is a gapful number since it is divisible by the number (24) 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 20796632064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33578463968).

20796632064 is an abundant number, since it is smaller than the sum of its proper divisors (46360295872).

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

20796632064 is an equidigital number, since it uses as much as digits as its factorization.

20796632064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194 (or 2161 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 20796632064 in words is "twenty billion, seven hundred ninety-six million, six hundred thirty-two thousand, sixty-four".