20839680000 has 720 divisors, whose sum is σ = 79161722640. Its totient is φ = 5474304000.

The previous prime is 20839679983. The next prime is 20839680031. The reversal of 20839680000 is 8693802.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 311039967 + ... + 311040033.

It is an arithmetic number, because the mean of its divisors is an integer number (109946837).

Almost surely, 2^20839680000 is an apocalyptic number.

20839680000 is a gapful number since it is divisible by the number (20) 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 20839680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39580861320).

20839680000 is an abundant number, since it is smaller than the sum of its proper divisors (58322042640).

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

20839680000 is an frugal number, since it uses more digits than its factorization.

20839680000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20839680000 in words is "twenty billion, eight hundred thirty-nine million, six hundred eighty thousand".