3506603431649 has 8 divisors (see below), whose sum is σ = 3718170773928. Its totient is φ = 3295624595200.

The previous prime is 3506603431607. The next prime is 3506603431673. The reversal of 3506603431649 is 9461343066053.

It can be written as a sum of positive squares in 4 ways, for example, as 562548001024 + 2944055430625 = 750032^2 + 1715825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3506603431649 - 2¹² = 3506603427553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3506603431597 and 3506603431606.

It is not an unprimeable number, because it can be changed into a prime (3506603481649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147114182 + ... + 147138015.

It is an arithmetic number, because the mean of its divisors is an integer number (464771346741).

Almost surely, 2^{3506603431649} is an apocalyptic number.

It is an amenable number.

3506603431649 is a deficient number, since it is larger than the sum of its proper divisors (211567342279).

3506603431649 is a wasteful number, since it uses less digits than its factorization.

3506603431649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294252915.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 3506603431649 in words is "three trillion, five hundred six billion, six hundred three million, four hundred thirty-one thousand, six hundred forty-nine".