261762241323011 has 8 divisors (see below), whose sum is σ = 307524870925104. Its totient is φ = 219660622089120.

The previous prime is 261762241322999. The next prime is 261762241323013. The reversal of 261762241323011 is 110323142267162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261762241323011 - 2²⁶ = 261762174214147 is a prime.

It is a super-2 number, since 2×261762241323011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261762241323011.

It is not an unprimeable number, because it can be changed into a prime (261762241323013) 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 7 ways as a sum of consecutive naturals, for example, 915252591896 + ... + 915252592181.

It is an arithmetic number, because the mean of its divisors is an integer number (38440608865638).

Almost surely, 2^{261762241323011} is an apocalyptic number.

261762241323011 is a deficient number, since it is larger than the sum of its proper divisors (45762629602093).

261762241323011 is a wasteful number, since it uses less digits than its factorization.

261762241323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830505184101.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 261762241323011 in words is "two hundred sixty-one trillion, seven hundred sixty-two billion, two hundred forty-one million, three hundred twenty-three thousand, eleven".