3520473072409 has 2 divisors, whose sum is σ = 3520473072410. Its totient is φ = 3520473072408.

The previous prime is 3520473072397. The next prime is 3520473072419. The reversal of 3520473072409 is 9042703740253.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2568390864400 + 952082208009 = 1602620^2 + 975747^2 .

It is a cyclic number.

It is not a de Polignac number, because 3520473072409 - 2¹⁹ = 3520472548121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3520473072419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760236536204 + 1760236536205.

It is an arithmetic number, because the mean of its divisors is an integer number (1760236536205).

Almost surely, 2^{3520473072409} is an apocalyptic number.

It is an amenable number.

3520473072409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520473072409 is an equidigital number, since it uses as much as digits as its factorization.

3520473072409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 3520473072409 in words is "three trillion, five hundred twenty billion, four hundred seventy-three million, seventy-two thousand, four hundred nine".