208386225845742 has 32 divisors (see below), whose sum is σ = 477535824230400. Its totient is φ = 59385865311648.

The previous prime is 208386225845723. The next prime is 208386225845779. The reversal of 208386225845742 is 247548522683802.

It is a super-2 number, since 2×208386225845742² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6377331742 + ... + 6377364417.

It is an arithmetic number, because the mean of its divisors is an integer number (14922994507200).

Almost surely, 2^{208386225845742} is an apocalyptic number.

208386225845742 is an abundant number, since it is smaller than the sum of its proper divisors (269149598384658).

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

208386225845742 is a wasteful number, since it uses less digits than its factorization.

208386225845742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12754696560.

The product of its (nonzero) digits is 412876800, while the sum is 66.

The spelling of 208386225845742 in words is "two hundred eight trillion, three hundred eighty-six billion, two hundred twenty-five million, eight hundred forty-five thousand, seven hundred forty-two".