16249073387749 has 4 divisors (see below), whose sum is σ = 16257081804460. Its totient is φ = 16241064971040.

The previous prime is 16249073387747. The next prime is 16249073387803. The reversal of 16249073387749 is 94778337094261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15520684536900 + 728388850849 = 3939630^2 + 853457^2 .

It is a cyclic number.

It is not a de Polignac number, because 16249073387749 - 2¹ = 16249073387747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16249073387747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4004205312 + ... + 4004209369.

It is an arithmetic number, because the mean of its divisors is an integer number (4064270451115).

Almost surely, 2^{16249073387749} is an apocalyptic number.

It is an amenable number.

16249073387749 is a deficient number, since it is larger than the sum of its proper divisors (8008416711).

16249073387749 is an equidigital number, since it uses as much as digits as its factorization.

16249073387749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8008416710.

The product of its (nonzero) digits is 384072192, while the sum is 70.

The spelling of 16249073387749 in words is "sixteen trillion, two hundred forty-nine billion, seventy-three million, three hundred eighty-seven thousand, seven hundred forty-nine".