16380201365 has 36 divisors (see below), whose sum is σ = 22206461508. Its totient is φ = 11590318080.

The previous prime is 16380201361. The next prime is 16380201389. The reversal of 16380201365 is 56310208361.

It can be written as a sum of positive squares in 6 ways, for example, as 2112137764 + 14268063601 = 45958^2 + 119449^2 .

It is not a de Polignac number, because 16380201365 - 2² = 16380201361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16380201361) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 818357 + ... + 838133.

It is an arithmetic number, because the mean of its divisors is an integer number (616846153).

Almost surely, 2^16380201365 is an apocalyptic number.

It is an amenable number.

16380201365 is a deficient number, since it is larger than the sum of its proper divisors (5826260143).

16380201365 is a wasteful number, since it uses less digits than its factorization.

16380201365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19878 (or 19830 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 16380201365 in words is "sixteen billion, three hundred eighty million, two hundred one thousand, three hundred sixty-five".