16445546345 has 16 divisors (see below), whose sum is σ = 21073720320. Its totient is φ = 12292996800.

The previous prime is 16445546329. The next prime is 16445546347. The reversal of 16445546345 is 54364554461.

It is not a de Polignac number, because 16445546345 - 2⁴ = 16445546329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16445546345.

It is not an unprimeable number, because it can be changed into a prime (16445546347) 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, 1824821 + ... + 1833810.

It is an arithmetic number, because the mean of its divisors is an integer number (1317107520).

Almost surely, 2^16445546345 is an apocalyptic number.

It is an amenable number.

16445546345 is a deficient number, since it is larger than the sum of its proper divisors (4628173975).

16445546345 is a wasteful number, since it uses less digits than its factorization.

16445546345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658696.

The product of its digits is 3456000, while the sum is 47.

The spelling of 16445546345 in words is "sixteen billion, four hundred forty-five million, five hundred forty-six thousand, three hundred forty-five".