16247637449 has 8 divisors (see below), whose sum is σ = 16498483848. Its totient is φ = 15998492160.

The previous prime is 16247637433. The next prime is 16247637451. The reversal of 16247637449 is 94473674261.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2061160000 + 14186477449 = 45400^2 + 119107^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16247637449 - 2⁴ = 16247637433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16247637449.

It is not an unprimeable number, because it can be changed into a prime (16247637479) 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, 406022 + ... + 444239.

It is an arithmetic number, because the mean of its divisors is an integer number (2062310481).

Almost surely, 2^16247637449 is an apocalyptic number.

It is an amenable number.

16247637449 is a deficient number, since it is larger than the sum of its proper divisors (250846399).

16247637449 is an equidigital number, since it uses as much as digits as its factorization.

16247637449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850555.

The product of its digits is 6096384, while the sum is 53.

The spelling of 16247637449 in words is "sixteen billion, two hundred forty-seven million, six hundred thirty-seven thousand, four hundred forty-nine".