11035439981 has 2 divisors, whose sum is σ = 11035439982. Its totient is φ = 11035439980.

The previous prime is 11035439963. The next prime is 11035439999. The reversal of 11035439981 is 18993453011.

It is a balanced prime because it is at equal distance from previous prime (11035439963) and next prime (11035439999).

It can be written as a sum of positive squares in only one way, i.e., 9558190756 + 1477249225 = 97766^2 + 38435^2 .

It is a cyclic number.

It is not a de Polignac number, because 11035439981 - 2⁶ = 11035439917 is a prime.

It is a super-2 number, since 2×11035439981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11035139981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5517719990 + 5517719991.

It is an arithmetic number, because the mean of its divisors is an integer number (5517719991).

Almost surely, 2^11035439981 is an apocalyptic number.

It is an amenable number.

11035439981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11035439981 is an equidigital number, since it uses as much as digits as its factorization.

11035439981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 11035439981 in words is "eleven billion, thirty-five million, four hundred thirty-nine thousand, nine hundred eighty-one".