16716223666045 has 16 divisors (see below), whose sum is σ = 20063975539248. Its totient is φ = 13369974566400.

The previous prime is 16716223666033. The next prime is 16716223666049. The reversal of 16716223666045 is 54066632261761.

It can be written as a sum of positive squares in 8 ways, for example, as 8672159191609 + 8044064474436 = 2944853^2 + 2836206^2 .

It is not a de Polignac number, because 16716223666045 - 2¹³ = 16716223657853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16716223666049) 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, 785636947 + ... + 785658223.

It is an arithmetic number, because the mean of its divisors is an integer number (1253998471203).

Almost surely, 2^{16716223666045} is an apocalyptic number.

It is an amenable number.

16716223666045 is a deficient number, since it is larger than the sum of its proper divisors (3347751873203).

16716223666045 is a wasteful number, since it uses less digits than its factorization.

16716223666045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49200.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 16716223666045 in words is "sixteen trillion, seven hundred sixteen billion, two hundred twenty-three million, six hundred sixty-six thousand, forty-five".