208240820060 has 48 divisors (see below), whose sum is σ = 538222431936. Its totient is φ = 65904786432.

The previous prime is 208240820041. The next prime is 208240820063. The reversal of 208240820060 is 60028042802.

It is a happy number.

It is a super-2 number, since 2×208240820060² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 208240819999 and 208240820026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208240820063) 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, 57207197 + ... + 57210836.

It is an arithmetic number, because the mean of its divisors is an integer number (11212967332).

Almost surely, 2^208240820060 is an apocalyptic number.

208240820060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208240820060 is an abundant number, since it is smaller than the sum of its proper divisors (329981611876).

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

208240820060 is a wasteful number, since it uses less digits than its factorization.

208240820060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114418062 (or 114418060 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 208240820060 its reverse (60028042802), we get a palindrome (268268862862).

The spelling of 208240820060 in words is "two hundred eight billion, two hundred forty million, eight hundred twenty thousand, sixty".