11906004635381 has 2 divisors, whose sum is σ = 11906004635382. Its totient is φ = 11906004635380.

The previous prime is 11906004635311. The next prime is 11906004635387. The reversal of 11906004635381 is 18353640060911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10549932740356 + 1356071895025 = 3248066^2 + 1164505^2 .

It is a cyclic number.

It is not a de Polignac number, because 11906004635381 - 2¹⁰ = 11906004634357 is a prime.

It is a super-2 number, since 2×11906004635381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11906004635387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5953002317690 + 5953002317691.

It is an arithmetic number, because the mean of its divisors is an integer number (5953002317691).

Almost surely, 2^{11906004635381} is an apocalyptic number.

It is an amenable number.

11906004635381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11906004635381 is an equidigital number, since it uses as much as digits as its factorization.

11906004635381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 11906004635381 in words is "eleven trillion, nine hundred six billion, four million, six hundred thirty-five thousand, three hundred eighty-one".