208873550772 has 120 divisors (see below), whose sum is σ = 553019852000. Its totient is φ = 68738704704.

The previous prime is 208873550749. The next prime is 208873550777. The reversal of 208873550772 is 277055378802.

208873550772 is a `hidden beast` number, since 2 + 0 + 8 + 87 + 3 + 550 + 7 + 7 + 2 = 666.

208873550772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208873550777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9983979 + ... + 10004877.

Almost surely, 2^208873550772 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 208873550772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276509926000).

208873550772 is an abundant number, since it is smaller than the sum of its proper divisors (344146301228).

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

208873550772 is a wasteful number, since it uses less digits than its factorization.

208873550772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21307 (or 21296 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 208873550772 in words is "two hundred eight billion, eight hundred seventy-three million, five hundred fifty thousand, seven hundred seventy-two".