208002840664 has 64 divisors (see below), whose sum is σ = 412532144640. Its totient is φ = 98127194880.

The previous prime is 208002840649. The next prime is 208002840677. The reversal of 208002840664 is 466048200802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3999532 + ... + 4051204.

It is an arithmetic number, because the mean of its divisors is an integer number (6445814760).

Almost surely, 2^208002840664 is an apocalyptic number.

It is an amenable number.

208002840664 is a deficient number, since it is larger than the sum of its proper divisors (204529303976).

208002840664 is a wasteful number, since it uses less digits than its factorization.

208002840664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52000 (or 51996 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 208002840664 in words is "two hundred eight billion, two million, eight hundred forty thousand, six hundred sixty-four".