16002775135531 has 4 divisors (see below), whose sum is σ = 16221991233352. Its totient is φ = 15783559037712.

The previous prime is 16002775135489. The next prime is 16002775135601. The reversal of 16002775135531 is 13553157720061.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16002775135531 is a prime.

It is a super-2 number, since 2×16002775135531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16002775195531) 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, 109608048801 + ... + 109608048946.

It is an arithmetic number, because the mean of its divisors is an integer number (4055497808338).

Almost surely, 2^{16002775135531} is an apocalyptic number.

16002775135531 is a deficient number, since it is larger than the sum of its proper divisors (219216097821).

16002775135531 is an equidigital number, since it uses as much as digits as its factorization.

16002775135531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219216097820.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 16002775135531 in words is "sixteen trillion, two billion, seven hundred seventy-five million, one hundred thirty-five thousand, five hundred thirty-one".