208830643888 has 20 divisors (see below), whose sum is σ = 409731012640. Its totient is φ = 103093608384.

The previous prime is 208830643877. The next prime is 208830643897. The reversal of 208830643888 is 888346038802.

It is a super-2 number, since 2×208830643888² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82605795 + ... + 82608322.

It is an arithmetic number, because the mean of its divisors is an integer number (20486550632).

Almost surely, 2^208830643888 is an apocalyptic number.

It is an amenable number.

208830643888 is a deficient number, since it is larger than the sum of its proper divisors (200900368752).

208830643888 is a wasteful number, since it uses less digits than its factorization.

208830643888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165214204 (or 165214198 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 58.

The spelling of 208830643888 in words is "two hundred eight billion, eight hundred thirty million, six hundred forty-three thousand, eight hundred eighty-eight".