16256217759 has 4 divisors (see below), whose sum is σ = 21674957016. Its totient is φ = 10837478504.

The previous prime is 16256217743. The next prime is 16256217767. The reversal of 16256217759 is 95771265261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16256217759 - 2⁴ = 16256217743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16256213759) 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 3 ways as a sum of consecutive naturals, for example, 2709369624 + ... + 2709369629.

It is an arithmetic number, because the mean of its divisors is an integer number (5418739254).

Almost surely, 2^16256217759 is an apocalyptic number.

16256217759 is a deficient number, since it is larger than the sum of its proper divisors (5418739257).

16256217759 is an equidigital number, since it uses as much as digits as its factorization.

16256217759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418739256.

The product of its digits is 1587600, while the sum is 51.

The spelling of 16256217759 in words is "sixteen billion, two hundred fifty-six million, two hundred seventeen thousand, seven hundred fifty-nine".