3518553709481 has 2 divisors, whose sum is σ = 3518553709482. Its totient is φ = 3518553709480.

The previous prime is 3518553709477. The next prime is 3518553709543. The reversal of 3518553709481 is 1849073558153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2946852889600 + 571700819881 = 1716640^2 + 756109^2 .

It is a cyclic number.

It is not a de Polignac number, because 3518553709481 - 2² = 3518553709477 is a prime.

It is a super-2 number, since 2×3518553709481² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3518553709481.

It is not a weakly prime, because it can be changed into another prime (3518553709471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759276854740 + 1759276854741.

It is an arithmetic number, because the mean of its divisors is an integer number (1759276854741).

Almost surely, 2^{3518553709481} is an apocalyptic number.

It is an amenable number.

3518553709481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3518553709481 is an equidigital number, since it uses as much as digits as its factorization.

3518553709481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 59.

The spelling of 3518553709481 in words is "three trillion, five hundred eighteen billion, five hundred fifty-three million, seven hundred nine thousand, four hundred eighty-one".