266538060616 has 32 divisors (see below), whose sum is σ = 543457979640. Its totient is φ = 122039682048.

The previous prime is 266538060577. The next prime is 266538060641. The reversal of 266538060616 is 616060835662.

It can be written as a sum of positive squares in 4 ways, for example, as 266348888100 + 189172516 = 516090^2 + 13754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266538060616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26479275 + ... + 26489338.

Almost surely, 2^266538060616 is an apocalyptic number.

It is an amenable number.

266538060616 is an abundant number, since it is smaller than the sum of its proper divisors (276919919024).

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

266538060616 is a wasteful number, since it uses less digits than its factorization.

266538060616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52968673 (or 52968669 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 266538060616 in words is "two hundred sixty-six billion, five hundred thirty-eight million, sixty thousand, six hundred sixteen".