13520838946 has 16 divisors (see below), whose sum is σ = 20648489400. Its totient is φ = 6639107328.

The previous prime is 13520838937. The next prime is 13520838953. The reversal of 13520838946 is 64983802531.

It can be written as a sum of positive squares in 4 ways, for example, as 12240988321 + 1279850625 = 110639^2 + 35775^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13520838946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249801 + ... + 299068.

Almost surely, 2^13520838946 is an apocalyptic number.

13520838946 is a deficient number, since it is larger than the sum of its proper divisors (7127650454).

13520838946 is a wasteful number, since it uses less digits than its factorization.

13520838946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549093.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 13520838946 in words is "thirteen billion, five hundred twenty million, eight hundred thirty-eight thousand, nine hundred forty-six".