16396217705 has 32 divisors (see below), whose sum is σ = 22936193280. Its totient is φ = 11019294720.

The previous prime is 16396217687. The next prime is 16396217741. The reversal of 16396217705 is 50771269361.

It is a happy number.

It is not a de Polignac number, because 16396217705 - 2¹⁴ = 16396201321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16396217705.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684125 + ... + 707685.

It is an arithmetic number, because the mean of its divisors is an integer number (716756040).

Almost surely, 2^16396217705 is an apocalyptic number.

It is an amenable number.

16396217705 is a deficient number, since it is larger than the sum of its proper divisors (6539975575).

16396217705 is a wasteful number, since it uses less digits than its factorization.

16396217705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23969.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 16396217705 in words is "sixteen billion, three hundred ninety-six million, two hundred seventeen thousand, seven hundred five".