16393759865 has 8 divisors (see below), whose sum is σ = 22482870720. Its totient is φ = 11241435312.

The previous prime is 16393759843. The next prime is 16393759891. The reversal of 16393759865 is 56895739361.

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 16393759865 - 2²⁰ = 16392711289 is a prime.

It is a super-2 number, since 2×16393759865² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16393759798 and 16393759807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234196535 + ... + 234196604.

It is an arithmetic number, because the mean of its divisors is an integer number (2810358840).

Almost surely, 2^16393759865 is an apocalyptic number.

It is an amenable number.

16393759865 is a deficient number, since it is larger than the sum of its proper divisors (6089110855).

16393759865 is an equidigital number, since it uses as much as digits as its factorization.

16393759865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468393151.

The product of its digits is 36741600, while the sum is 62.

The spelling of 16393759865 in words is "sixteen billion, three hundred ninety-three million, seven hundred fifty-nine thousand, eight hundred sixty-five".