11701026308261 has 4 divisors (see below), whose sum is σ = 11701043587212. Its totient is φ = 11701009029312.

The previous prime is 11701026308243. The next prime is 11701026308263. The reversal of 11701026308261 is 16280362010711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9760281981025 + 1940744327236 = 3124145^2 + 1393106^2 .

It is a cyclic number.

It is not a de Polignac number, because 11701026308261 - 2³⁰ = 11699952566437 is a prime.

It is a super-4 number, since 4×11701026308261⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11701026308263) 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 3 ways as a sum of consecutive naturals, for example, 7580426 + ... + 8992491.

It is an arithmetic number, because the mean of its divisors is an integer number (2925260896803).

Almost surely, 2^{11701026308261} is an apocalyptic number.

It is an amenable number.

11701026308261 is a deficient number, since it is larger than the sum of its proper divisors (17278951).

11701026308261 is an equidigital number, since it uses as much as digits as its factorization.

11701026308261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17278950.

The product of its (nonzero) digits is 24192, while the sum is 38.

Adding to 11701026308261 its reverse (16280362010711), we get a palindrome (27981388318972).

The spelling of 11701026308261 in words is "eleven trillion, seven hundred one billion, twenty-six million, three hundred eight thousand, two hundred sixty-one".