3445403521213 has 4 divisors (see below), whose sum is σ = 3445407259420. Its totient is φ = 3445399783008.

The previous prime is 3445403521193. The next prime is 3445403521267. The reversal of 3445403521213 is 3121253045443.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2948099302009 + 497304219204 = 1717003^2 + 705198^2 .

It is a cyclic number.

It is not a de Polignac number, because 3445403521213 - 2²¹ = 3445401424061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3445403521013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605431 + ... + 2693947.

It is an arithmetic number, because the mean of its divisors is an integer number (861351814855).

Almost surely, 2^{3445403521213} is an apocalyptic number.

It is an amenable number.

3445403521213 is a deficient number, since it is larger than the sum of its proper divisors (3738207).

3445403521213 is a wasteful number, since it uses less digits than its factorization.

3445403521213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738206.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 3445403521213 its reverse (3121253045443), we get a palindrome (6566656566656).

The spelling of 3445403521213 in words is "three trillion, four hundred forty-five billion, four hundred three million, five hundred twenty-one thousand, two hundred thirteen".