16253513308261 has 8 divisors (see below), whose sum is σ = 17319217630680. Its totient is φ = 15199988464128.

The previous prime is 16253513308259. The next prime is 16253513308267. The reversal of 16253513308261 is 16280331535261.

It can be written as a sum of positive squares in 4 ways, for example, as 1474148081025 + 14779365227236 = 1214145^2 + 3844394^2 .

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 16253513308261 - 2¹ = 16253513308259 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 (16253513308267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3044866816 + ... + 3044872153.

It is an arithmetic number, because the mean of its divisors is an integer number (2164902203835).

Almost surely, 2^{16253513308261} is an apocalyptic number.

It is an amenable number.

16253513308261 is a deficient number, since it is larger than the sum of its proper divisors (1065704322419).

16253513308261 is a wasteful number, since it uses less digits than its factorization.

16253513308261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089739143.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 16253513308261 in words is "sixteen trillion, two hundred fifty-three billion, five hundred thirteen million, three hundred eight thousand, two hundred sixty-one".