16218374445 has 480 divisors, whose sum is σ = 40149914112. Its totient is φ = 6084688896.

The previous prime is 16218374401. The next prime is 16218374461. The reversal of 16218374445 is 54447381261.

16218374445 is a `hidden beast` number, since 1 + 62 + 1 + 83 + 74 + 445 = 666.

It is not a de Polignac number, because 16218374445 - 2⁹ = 16218373933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16218374445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 306007039 + ... + 306007091.

Almost surely, 2^16218374445 is an apocalyptic number.

16218374445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16218374445 is an abundant number, since it is smaller than the sum of its proper divisors (23931539667).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16218374445 is a wasteful number, since it uses less digits than its factorization.

16218374445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 123 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 16218374445 in words is "sixteen billion, two hundred eighteen million, three hundred seventy-four thousand, four hundred forty-five".