13021045315 has 16 divisors (see below), whose sum is σ = 16421932800. Its totient is φ = 9892235232.

The previous prime is 13021045313. The next prime is 13021045321. The reversal of 13021045315 is 51354012031.

It is a happy number.

It is not a de Polignac number, because 13021045315 - 2¹ = 13021045313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13021045315.

It is not an unprimeable number, because it can be changed into a prime (13021045313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391305 + ... + 423274.

It is an arithmetic number, because the mean of its divisors is an integer number (1026370800).

Almost surely, 2^13021045315 is an apocalyptic number.

13021045315 is a deficient number, since it is larger than the sum of its proper divisors (3400887485).

13021045315 is a wasteful number, since it uses less digits than its factorization.

13021045315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814746.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13021045315 its reverse (51354012031), we get a palindrome (64375057346).

The spelling of 13021045315 in words is "thirteen billion, twenty-one million, forty-five thousand, three hundred fifteen".