16805092087 has 12 divisors (see below), whose sum is σ = 19784312856. Its totient is φ = 14230814640.

The previous prime is 16805092081. The next prime is 16805092141. The reversal of 16805092087 is 78029050861.

It is not a de Polignac number, because 16805092087 - 2³ = 16805092079 is a prime.

It is a super-2 number, since 2×16805092087² (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 (16805092081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2061964 + ... + 2070097.

It is an arithmetic number, because the mean of its divisors is an integer number (1648692738).

Almost surely, 2^16805092087 is an apocalyptic number.

16805092087 is a deficient number, since it is larger than the sum of its proper divisors (2979220769).

16805092087 is an equidigital number, since it uses as much as digits as its factorization.

16805092087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132158 (or 4132151 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 16805092087 in words is "sixteen billion, eight hundred five million, ninety-two thousand, eighty-seven".