208109513472 has 864 divisors, whose sum is σ = 720299059200. Its totient is φ = 52951449600.

The previous prime is 208109513449. The next prime is 208109513473. The reversal of 208109513472 is 274315901802.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (208109513473) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 908775054 + ... + 908775282.

Almost surely, 2^208109513472 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 208109513472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360149529600).

208109513472 is an abundant number, since it is smaller than the sum of its proper divisors (512189545728).

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

208109513472 is a wasteful number, since it uses less digits than its factorization.

208109513472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 208109513472 in words is "two hundred eight billion, one hundred nine million, five hundred thirteen thousand, four hundred seventy-two".