3518741106521 has 2 divisors, whose sum is σ = 3518741106522. Its totient is φ = 3518741106520.

The previous prime is 3518741106427. The next prime is 3518741106547. The reversal of 3518741106521 is 1256011478153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2726577025225 + 792164081296 = 1651235^2 + 890036^2 .

It is an emirp because it is prime and its reverse (1256011478153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3518741106521 - 2³⁰ = 3517667364697 is a prime.

It is not a weakly prime, because it can be changed into another prime (3518741126521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759370553260 + 1759370553261.

It is an arithmetic number, because the mean of its divisors is an integer number (1759370553261).

Almost surely, 2^{3518741106521} is an apocalyptic number.

It is an amenable number.

3518741106521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3518741106521 is an equidigital number, since it uses as much as digits as its factorization.

3518741106521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 3518741106521 in words is "three trillion, five hundred eighteen billion, seven hundred forty-one million, one hundred six thousand, five hundred twenty-one".