208081851042 has 32 divisors (see below), whose sum is σ = 448206897600. Its totient is φ = 64020813120.

The previous prime is 208081851041. The next prime is 208081851067. The reversal of 208081851042 is 240158180802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (208081851041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169709 + ... + 1335807.

It is an arithmetic number, because the mean of its divisors is an integer number (14006465550).

Almost surely, 2^208081851042 is an apocalyptic number.

208081851042 is an abundant number, since it is smaller than the sum of its proper divisors (240125046558).

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

208081851042 is a wasteful number, since it uses less digits than its factorization.

208081851042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182178.

The product of its (nonzero) digits is 40960, while the sum is 39.

The spelling of 208081851042 in words is "two hundred eight billion, eighty-one million, eight hundred fifty-one thousand, forty-two".