16607165545 has 4 divisors (see below), whose sum is σ = 19928598660. Its totient is φ = 13285732432.

The previous prime is 16607165543. The next prime is 16607165573. The reversal of 16607165545 is 54556170661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54556170661 = 1049 ⋅52007789.

It can be written as a sum of positive squares in 2 ways, for example, as 5621400576 + 10985764969 = 74976^2 + 104813^2 .

It is a cyclic number.

It is not a de Polignac number, because 16607165545 - 2¹ = 16607165543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16607165495 and 16607165504.

It is not an unprimeable number, because it can be changed into a prime (16607165543) 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, 1660716550 + ... + 1660716559.

It is an arithmetic number, because the mean of its divisors is an integer number (4982149665).

Almost surely, 2^16607165545 is an apocalyptic number.

It is an amenable number.

16607165545 is a deficient number, since it is larger than the sum of its proper divisors (3321433115).

16607165545 is an equidigital number, since it uses as much as digits as its factorization.

16607165545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321433114.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 16607165545 in words is "sixteen billion, six hundred seven million, one hundred sixty-five thousand, five hundred forty-five".