16215544984849 has 8 divisors (see below), whose sum is σ = 18835855533248. Its totient is φ = 13671185466960.

The previous prime is 16215544984819. The next prime is 16215544984853. The reversal of 16215544984849 is 94848944551261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16215544984849 - 2¹⁵ = 16215544952081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16215544984819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18987757167 + ... + 18987758020.

It is an arithmetic number, because the mean of its divisors is an integer number (2354481941656).

Almost surely, 2^{16215544984849} is an apocalyptic number.

It is an amenable number.

16215544984849 is a deficient number, since it is larger than the sum of its proper divisors (2620310548399).

16215544984849 is an equidigital number, since it uses as much as digits as its factorization.

16215544984849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37975515255.

The product of its digits is 398131200, while the sum is 70.

The spelling of 16215544984849 in words is "sixteen trillion, two hundred fifteen billion, five hundred forty-four million, nine hundred eighty-four thousand, eight hundred forty-nine".