16541033669 has 4 divisors (see below), whose sum is σ = 16544344896. Its totient is φ = 16537722444.

The previous prime is 16541033657. The next prime is 16541033681. The reversal of 16541033669 is 96633014561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96633014561 = 109169 ⋅885169.

It is an interprime number because it is at equal distance from previous prime (16541033657) and next prime (16541033681).

It is a cyclic number.

It is not a de Polignac number, because 16541033669 - 2⁴ = 16541033653 is a prime.

It is a super-2 number, since 2×16541033669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16541035669) 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, 1648109 + ... + 1658114.

It is an arithmetic number, because the mean of its divisors is an integer number (4136086224).

Almost surely, 2^16541033669 is an apocalyptic number.

It is an amenable number.

16541033669 is a deficient number, since it is larger than the sum of its proper divisors (3311227).

16541033669 is an equidigital number, since it uses as much as digits as its factorization.

16541033669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311226.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 16541033669 in words is "sixteen billion, five hundred forty-one million, thirty-three thousand, six hundred sixty-nine".