13565328451345 has 64 divisors (see below), whose sum is σ = 18776942553600. Its totient is φ = 9317858457600.

The previous prime is 13565328451343. The next prime is 13565328451361. The reversal of 13565328451345 is 54315482356531.

It is not a de Polignac number, because 13565328451345 - 2¹ = 13565328451343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (13565328451343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16195059 + ... + 17012071.

It is an arithmetic number, because the mean of its divisors is an integer number (293389727400).

Almost surely, 2^{13565328451345} is an apocalyptic number.

It is an amenable number.

13565328451345 is a deficient number, since it is larger than the sum of its proper divisors (5211614102255).

13565328451345 is a wasteful number, since it uses less digits than its factorization.

13565328451345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817306.

The product of its digits is 25920000, while the sum is 55.

The spelling of 13565328451345 in words is "thirteen trillion, five hundred sixty-five billion, three hundred twenty-eight million, four hundred fifty-one thousand, three hundred forty-five".