16841620869 has 4 divisors (see below), whose sum is σ = 22455494496. Its totient is φ = 11227747244.

The previous prime is 16841620853. The next prime is 16841620871. The reversal of 16841620869 is 96802614861.

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.

It is a cyclic number.

It is not a de Polignac number, because 16841620869 - 2⁴ = 16841620853 is a prime.

It is a super-2 number, since 2×16841620869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16841620819) 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, 2806936809 + ... + 2806936814.

It is an arithmetic number, because the mean of its divisors is an integer number (5613873624).

Almost surely, 2^16841620869 is an apocalyptic number.

It is an amenable number.

16841620869 is a deficient number, since it is larger than the sum of its proper divisors (5613873627).

16841620869 is an equidigital number, since it uses as much as digits as its factorization.

16841620869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613873626.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 16841620869 in words is "sixteen billion, eight hundred forty-one million, six hundred twenty thousand, eight hundred sixty-nine".