16799238725761 has 4 divisors (see below), whose sum is σ = 16799278503172. Its totient is φ = 16799198948352.

The previous prime is 16799238725741. The next prime is 16799238725771. The reversal of 16799238725761 is 16752783299761.

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 1170507610000 + 15628731115761 = 1081900^2 + 3953319^2 .

It is a cyclic number.

It is not a de Polignac number, because 16799238725761 - 2¹¹ = 16799238723713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16799238725741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19248336 + ... + 20102161.

It is an arithmetic number, because the mean of its divisors is an integer number (4199819625793).

Almost surely, 2^{16799238725761} is an apocalyptic number.

It is an amenable number.

16799238725761 is a deficient number, since it is larger than the sum of its proper divisors (39777411).

16799238725761 is an equidigital number, since it uses as much as digits as its factorization.

16799238725761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39777410.

The product of its digits is 480090240, while the sum is 73.

The spelling of 16799238725761 in words is "sixteen trillion, seven hundred ninety-nine billion, two hundred thirty-eight million, seven hundred twenty-five thousand, seven hundred sixty-one".