16803195545 has 8 divisors (see below), whose sum is σ = 20166553800. Its totient is φ = 13440743680.

The previous prime is 16803195499. The next prime is 16803195551. The reversal of 16803195545 is 54559130861.

It can be written as a sum of positive squares in 4 ways, for example, as 457061641 + 16346133904 = 21379^2 + 127852^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16803195545 - 2²⁰ = 16802146969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16803195545.

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, 185120 + ... + 260529.

It is an arithmetic number, because the mean of its divisors is an integer number (2520819225).

Almost surely, 2^16803195545 is an apocalyptic number.

It is an amenable number.

16803195545 is a deficient number, since it is larger than the sum of its proper divisors (3363358255).

16803195545 is an equidigital number, since it uses as much as digits as its factorization.

16803195545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453195.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 16803195545 in words is "sixteen billion, eight hundred three million, one hundred ninety-five thousand, five hundred forty-five".