16545456545 has 16 divisors (see below), whose sum is σ = 20193167808. Its totient is φ = 13012509120.

The previous prime is 16545456541. The next prime is 16545456547. The reversal of 16545456545 is 54565454561.

It is not a de Polignac number, because 16545456545 - 2² = 16545456541 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16545456493 and 16545456502.

It is not an unprimeable number, because it can be changed into a prime (16545456541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47954 + ... + 188123.

It is an arithmetic number, because the mean of its divisors is an integer number (1262072988).

Almost surely, 2^16545456545 is an apocalyptic number.

It is an amenable number.

16545456545 is a deficient number, since it is larger than the sum of its proper divisors (3647711263).

16545456545 is a wasteful number, since it uses less digits than its factorization.

16545456545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236320.

The product of its digits is 7200000, while the sum is 50.

The spelling of 16545456545 in words is "sixteen billion, five hundred forty-five million, four hundred fifty-six thousand, five hundred forty-five".