16843720705 has 32 divisors (see below), whose sum is σ = 23658015744. Its totient is φ = 11271427776.

The previous prime is 16843720693. The next prime is 16843720711. The reversal of 16843720705 is 50702734861.

It is not a de Polignac number, because 16843720705 - 2²¹ = 16841623553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

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, 1962754 + ... + 1971316.

It is an arithmetic number, because the mean of its divisors is an integer number (739312992).

Almost surely, 2^16843720705 is an apocalyptic number.

It is an amenable number.

16843720705 is a deficient number, since it is larger than the sum of its proper divisors (6814295039).

16843720705 is a wasteful number, since it uses less digits than its factorization.

16843720705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9925.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 16843720705 in words is "sixteen billion, eight hundred forty-three million, seven hundred twenty thousand, seven hundred five".