208153340140 has 24 divisors (see below), whose sum is σ = 437131426032. Its totient is φ = 83259543360.

The previous prime is 208153340119. The next prime is 208153340173. The reversal of 208153340140 is 41043351802.

208153340140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×208153340140² (a number of 23 digits) contains 22 as substring.

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, 1235155 + ... + 1393525.

It is an arithmetic number, because the mean of its divisors is an integer number (18213809418).

Almost surely, 2^208153340140 is an apocalyptic number.

208153340140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208153340140 is an abundant number, since it is smaller than the sum of its proper divisors (228978085892).

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

208153340140 is a wasteful number, since it uses less digits than its factorization.

208153340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224097 (or 224095 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 208153340140 its reverse (41043351802), we get a palindrome (249196691942).

The spelling of 208153340140 in words is "two hundred eight billion, one hundred fifty-three million, three hundred forty thousand, one hundred forty".