13316521028 has 12 divisors (see below), whose sum is σ = 23324782572. Its totient is φ = 6652297440.

The previous prime is 13316521027. The next prime is 13316521103. The reversal of 13316521028 is 82012561331.

It can be written as a sum of positive squares in 2 ways, for example, as 6290393344 + 7026127684 = 79312^2 + 83822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13316520985 and 13316521003.

It is not an unprimeable number, because it can be changed into a prime (13316521027) 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, 1485743 + ... + 1494678.

It is an arithmetic number, because the mean of its divisors is an integer number (1943731881).

Almost surely, 2^13316521028 is an apocalyptic number.

It is an amenable number.

13316521028 is a deficient number, since it is larger than the sum of its proper divisors (10008261544).

13316521028 is a wasteful number, since it uses less digits than its factorization.

13316521028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981542 (or 2981540 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 13316521028 in words is "thirteen billion, three hundred sixteen million, five hundred twenty-one thousand, twenty-eight".