16538775355 has 4 divisors (see below), whose sum is σ = 19846530432. Its totient is φ = 13231020280.

The previous prime is 16538775349. The next prime is 16538775367. The reversal of 16538775355 is 55357783561.

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

It is not a de Polignac number, because 16538775355 - 2¹³ = 16538767163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16538775296 and 16538775305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653877531 + ... + 1653877540.

It is an arithmetic number, because the mean of its divisors is an integer number (4961632608).

Almost surely, 2^16538775355 is an apocalyptic number.

16538775355 is a deficient number, since it is larger than the sum of its proper divisors (3307755077).

16538775355 is an equidigital number, since it uses as much as digits as its factorization.

16538775355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307755076.

The product of its digits is 13230000, while the sum is 55.

The spelling of 16538775355 in words is "sixteen billion, five hundred thirty-eight million, seven hundred seventy-five thousand, three hundred fifty-five".