16852020091 has 2 divisors, whose sum is σ = 16852020092. Its totient is φ = 16852020090.

The previous prime is 16852020071. The next prime is 16852020173. The reversal of 16852020091 is 19002025861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16852020091 - 2²⁵ = 16818465659 is a prime.

It is a super-2 number, since 2×16852020091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16852020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426010045 + 8426010046.

It is an arithmetic number, because the mean of its divisors is an integer number (8426010046).

Almost surely, 2^16852020091 is an apocalyptic number.

16852020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16852020091 is an equidigital number, since it uses as much as digits as its factorization.

16852020091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 16852020091 in words is "sixteen billion, eight hundred fifty-two million, twenty thousand, ninety-one".