266361530461 has 32 divisors (see below), whose sum is σ = 315189262080. Its totient is φ = 222724339200.

The previous prime is 266361530459. The next prime is 266361530473. The reversal of 266361530461 is 164035163662.

It is a cyclic number.

It is not a de Polignac number, because 266361530461 - 2¹ = 266361530459 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266361530401) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 20109801 + ... + 20123041.

It is an arithmetic number, because the mean of its divisors is an integer number (9849664440).

Almost surely, 2^266361530461 is an apocalyptic number.

It is an amenable number.

266361530461 is a deficient number, since it is larger than the sum of its proper divisors (48827731619).

266361530461 is a wasteful number, since it uses less digits than its factorization.

266361530461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16837.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 266361530461 in words is "two hundred sixty-six billion, three hundred sixty-one million, five hundred thirty thousand, four hundred sixty-one".