16545720216450 has 48 divisors (see below), whose sum is σ = 41906436923520. Its totient is φ = 4318315629120.

The previous prime is 16545720216449. The next prime is 16545720216457. The reversal of 16545720216450 is 5461202754561.

It is a super-3 number, since 3×16545720216450³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16545720216450.

It is not an unprimeable number, because it can be changed into a prime (16545720216457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1173448285 + ... + 1173462384.

It is an arithmetic number, because the mean of its divisors is an integer number (873050769240).

Almost surely, 2^{16545720216450} is an apocalyptic number.

16545720216450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16545720216450 is an abundant number, since it is smaller than the sum of its proper divisors (25360716707070).

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

16545720216450 is a wasteful number, since it uses less digits than its factorization.

16545720216450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346910731 (or 2346910726 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 16545720216450 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty million, two hundred sixteen thousand, four hundred fifty".