16395249361 has 24 divisors (see below), whose sum is σ = 17742630744. Its totient is φ = 15096913920.

The previous prime is 16395249337. The next prime is 16395249379. The reversal of 16395249361 is 16394259361.

It can be written as a sum of positive squares in 12 ways, for example, as 240839361 + 16154410000 = 15519^2 + 127100^2 .

It is not a de Polignac number, because 16395249361 - 2⁵ = 16395249329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16395241361) 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 23 ways as a sum of consecutive naturals, for example, 12410581 + ... + 12411901.

It is an arithmetic number, because the mean of its divisors is an integer number (739276281).

Almost surely, 2^16395249361 is an apocalyptic number.

It is an amenable number.

16395249361 is a deficient number, since it is larger than the sum of its proper divisors (1347381383).

16395249361 is a wasteful number, since it uses less digits than its factorization.

16395249361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621 (or 1548 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 49.

The spelling of 16395249361 in words is "sixteen billion, three hundred ninety-five million, two hundred forty-nine thousand, three hundred sixty-one".