201210026660 has 12 divisors (see below), whose sum is σ = 422541056028. Its totient is φ = 80484010656.

The previous prime is 201210026609. The next prime is 201210026663. The reversal of 201210026660 is 66620012102.

201210026660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 120031759936 + 81178266724 = 346456^2 + 284918^2 .

It is not an unprimeable number, because it can be changed into a prime (201210026663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030250647 + ... + 5030250686.

It is an arithmetic number, because the mean of its divisors is an integer number (35211754669).

Almost surely, 2^201210026660 is an apocalyptic number.

201210026660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201210026660 is an abundant number, since it is smaller than the sum of its proper divisors (221331029368).

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

201210026660 is a wasteful number, since it uses less digits than its factorization.

201210026660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060501342 (or 10060501340 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 201210026660 its reverse (66620012102), we get a palindrome (267830038762).

The spelling of 201210026660 in words is "two hundred one billion, two hundred ten million, twenty-six thousand, six hundred sixty".