20708816832 has 448 divisors, whose sum is σ = 74044454400. Its totient is φ = 5593743360.

The previous prime is 20708816831. The next prime is 20708816833. The reversal of 20708816832 is 23861880702.

It is an interprime number because it is at equal distance from previous prime (20708816831) and next prime (20708816833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708816831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6137898 + ... + 6141270.

It is an arithmetic number, because the mean of its divisors is an integer number (165277800).

Almost surely, 2^20708816832 is an apocalyptic number.

20708816832 is a gapful number since it is divisible by the number (22) 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 20708816832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37022227200).

20708816832 is an abundant number, since it is smaller than the sum of its proper divisors (53335637568).

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

20708816832 is a wasteful number, since it uses less digits than its factorization.

20708816832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 20708816832 in words is "twenty billion, seven hundred eight million, eight hundred sixteen thousand, eight hundred thirty-two".