16538853259 has 4 divisors (see below), whose sum is σ = 17409319240. Its totient is φ = 15668387280.

The previous prime is 16538853251. The next prime is 16538853263. The reversal of 16538853259 is 95235883561.

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 16538853259 - 2³ = 16538853251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16538853251) 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, 435232962 + ... + 435232999.

It is an arithmetic number, because the mean of its divisors is an integer number (4352329810).

Almost surely, 2^16538853259 is an apocalyptic number.

16538853259 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16538853259 is a deficient number, since it is larger than the sum of its proper divisors (870465981).

16538853259 is an equidigital number, since it uses as much as digits as its factorization.

16538853259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870465980.

The product of its digits is 7776000, while the sum is 55.

The spelling of 16538853259 in words is "sixteen billion, five hundred thirty-eight million, eight hundred fifty-three thousand, two hundred fifty-nine".