208796990976 has 320 divisors, whose sum is σ = 723588687360. Its totient is φ = 58200145920.

The previous prime is 208796990921. The next prime is 208796990981. The reversal of 208796990976 is 679099697802.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 3941175 + ... + 3993801.

It is an arithmetic number, because the mean of its divisors is an integer number (2261214648).

Almost surely, 2^208796990976 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 208796990976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361794343680).

208796990976 is an abundant number, since it is smaller than the sum of its proper divisors (514791696384).

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

208796990976 is an equidigital number, since it uses as much as digits as its factorization.

208796990976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52702 (or 52680 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 72.

The spelling of 208796990976 in words is "two hundred eight billion, seven hundred ninety-six million, nine hundred ninety thousand, nine hundred seventy-six".