11043500666531 has 2 divisors, whose sum is σ = 11043500666532. Its totient is φ = 11043500666530.

The previous prime is 11043500666509. The next prime is 11043500666543. The reversal of 11043500666531 is 13566600534011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11043500666531 - 2⁶ = 11043500666467 is a prime.

It is a super-2 number, since 2×11043500666531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11043500666581) 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, 5521750333265 + 5521750333266.

It is an arithmetic number, because the mean of its divisors is an integer number (5521750333266).

Almost surely, 2^{11043500666531} is an apocalyptic number.

11043500666531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11043500666531 is an equidigital number, since it uses as much as digits as its factorization.

11043500666531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 11043500666531 in words is "eleven trillion, forty-three billion, five hundred million, six hundred sixty-six thousand, five hundred thirty-one".