208342054217742 has 16 divisors (see below), whose sum is σ = 438614850984960. Its totient is φ = 65792227647672.

The previous prime is 208342054217663. The next prime is 208342054217777. The reversal of 208342054217742 is 247712450243802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913780939438 + ... + 913780939665.

It is an arithmetic number, because the mean of its divisors is an integer number (27413428186560).

Almost surely, 2^{208342054217742} is an apocalyptic number.

208342054217742 is an abundant number, since it is smaller than the sum of its proper divisors (230272796767218).

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

208342054217742 is a wasteful number, since it uses less digits than its factorization.

208342054217742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827561879127.

The product of its (nonzero) digits is 6021120, while the sum is 51.

The spelling of 208342054217742 in words is "two hundred eight trillion, three hundred forty-two billion, fifty-four million, two hundred seventeen thousand, seven hundred forty-two".