16545767117216 has 36 divisors (see below), whose sum is σ = 33659165160306. Its totient is φ = 8006016332160.

The previous prime is 16545767117179. The next prime is 16545767117219. The reversal of 16545767117216 is 61271176754561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11274793977616 + 5270973139600 = 3357796^2 + 2295860^2 .

It is not an unprimeable number, because it can be changed into a prime (16545767117219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268988615 + ... + 269050118.

Almost surely, 2^{16545767117216} is an apocalyptic number.

16545767117216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16545767117216 is an abundant number, since it is smaller than the sum of its proper divisors (17113398043090).

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

16545767117216 is an equidigital number, since it uses as much as digits as its factorization.

16545767117216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538038805 (or 538038766 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 59.

The spelling of 16545767117216 in words is "sixteen trillion, five hundred forty-five billion, seven hundred sixty-seven million, one hundred seventeen thousand, two hundred sixteen".