13405325166545 has 8 divisors (see below), whose sum is σ = 17323804830696. Its totient is φ = 9899317046016.

The previous prime is 13405325166533. The next prime is 13405325166551. The reversal of 13405325166545 is 54566152350431.

It can be written as a sum of positive squares in 4 ways, for example, as 10727987776 + 13394597178769 = 103576^2 + 3659863^2 .

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 13405325166545 - 2⁴ = 13405325166529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13405325166493 and 13405325166502.

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, 103117885832 + ... + 103117885961.

It is an arithmetic number, because the mean of its divisors is an integer number (2165475603837).

Almost surely, 2^{13405325166545} is an apocalyptic number.

It is an amenable number.

13405325166545 is a deficient number, since it is larger than the sum of its proper divisors (3918479664151).

13405325166545 is a wasteful number, since it uses less digits than its factorization.

13405325166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206235771811.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 13405325166545 in words is "thirteen trillion, four hundred five billion, three hundred twenty-five million, one hundred sixty-six thousand, five hundred forty-five".