16785330146890 has 16 divisors (see below), whose sum is σ = 30213641360232. Its totient is φ = 6714121593024.

The previous prime is 16785330146873. The next prime is 16785330146891. The reversal of 16785330146890 is 9864103358761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8794967228161 + 7990362918729 = 2965631^2 + 2826723^2 .

It is not an unprimeable number, because it can be changed into a prime (16785330146891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10523572 + ... + 12013168.

Almost surely, 2^{16785330146890} is an apocalyptic number.

16785330146890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16785330146890 is a deficient number, since it is larger than the sum of its proper divisors (13428311213342).

16785330146890 is a wasteful number, since it uses less digits than its factorization.

16785330146890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616441.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 16785330146890 in words is "sixteen trillion, seven hundred eighty-five billion, three hundred thirty million, one hundred forty-six thousand, eight hundred ninety".