16633065545 has 4 divisors (see below), whose sum is σ = 19959678660. Its totient is φ = 13306452432.

The previous prime is 16633065541. The next prime is 16633065563. The reversal of 16633065545 is 54556033661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7498867216 + 9134198329 = 86596^2 + 95573^2 .

It is a cyclic number.

It is not a de Polignac number, because 16633065545 - 2² = 16633065541 is a prime.

It is a super-2 number, since 2×16633065545² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16633065496 and 16633065505.

It is not an unprimeable number, because it can be changed into a prime (16633065541) 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, 1663306550 + ... + 1663306559.

It is an arithmetic number, because the mean of its divisors is an integer number (4989919665).

Almost surely, 2^16633065545 is an apocalyptic number.

It is an amenable number.

16633065545 is a deficient number, since it is larger than the sum of its proper divisors (3326613115).

16633065545 is an equidigital number, since it uses as much as digits as its factorization.

16633065545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326613114.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 16633065545 in words is "sixteen billion, six hundred thirty-three million, sixty-five thousand, five hundred forty-five".