11726630521 has 2 divisors, whose sum is σ = 11726630522. Its totient is φ = 11726630520.

The previous prime is 11726630497. The next prime is 11726630533. The reversal of 11726630521 is 12503662711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9889308025 + 1837322496 = 99445^2 + 42864^2 .

It is a cyclic number.

It is not a de Polignac number, because 11726630521 - 2²¹ = 11724533369 is a prime.

It is not a weakly prime, because it can be changed into another prime (11726630561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5863315260 + 5863315261.

It is an arithmetic number, because the mean of its divisors is an integer number (5863315261).

Almost surely, 2^11726630521 is an apocalyptic number.

It is an amenable number.

11726630521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11726630521 is an equidigital number, since it uses as much as digits as its factorization.

11726630521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 11726630521 in words is "eleven billion, seven hundred twenty-six million, six hundred thirty thousand, five hundred twenty-one".