208606468440 has 64 divisors (see below), whose sum is σ = 630321753600. Its totient is φ = 55228182912.

The previous prime is 208606468439. The next prime is 208606468451. The reversal of 208606468440 is 44864606802.

208606468440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208606468440.

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, 6236512 + ... + 6269871.

It is an arithmetic number, because the mean of its divisors is an integer number (9848777400).

Almost surely, 2^208606468440 is an apocalyptic number.

208606468440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208606468440 is an abundant number, since it is smaller than the sum of its proper divisors (421715285160).

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

208606468440 is a wasteful number, since it uses less digits than its factorization.

208606468440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12506536 (or 12506532 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 208606468440 in words is "two hundred eight billion, six hundred six million, four hundred sixty-eight thousand, four hundred forty".