16353781859 has 4 divisors (see below), whose sum is σ = 17214507240. Its totient is φ = 15493056480.

The previous prime is 16353781753. The next prime is 16353781861. The reversal of 16353781859 is 95818735361.

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 16353781859 - 2¹² = 16353777763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16353781879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430362662 + ... + 430362699.

It is an arithmetic number, because the mean of its divisors is an integer number (4303626810).

Almost surely, 2^16353781859 is an apocalyptic number.

16353781859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16353781859 is a deficient number, since it is larger than the sum of its proper divisors (860725381).

16353781859 is an equidigital number, since it uses as much as digits as its factorization.

16353781859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860725380.

The product of its digits is 5443200, while the sum is 56.

The spelling of 16353781859 in words is "sixteen billion, three hundred fifty-three million, seven hundred eighty-one thousand, eight hundred fifty-nine".