16646105345 has 8 divisors (see below), whose sum is σ = 19996833960. Its totient is φ = 13302545920.

The previous prime is 16646105303. The next prime is 16646105363. The reversal of 16646105345 is 54350164661.

It can be written as a sum of positive squares in 4 ways, for example, as 84474481 + 16561630864 = 9191^2 + 128692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16646105345 - 2¹⁴ = 16646088961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787186 + ... + 1796475.

It is an arithmetic number, because the mean of its divisors is an integer number (2499604245).

Almost surely, 2^16646105345 is an apocalyptic number.

It is an amenable number.

16646105345 is a deficient number, since it is larger than the sum of its proper divisors (3350728615).

16646105345 is an equidigital number, since it uses as much as digits as its factorization.

16646105345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584595.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 16646105345 in words is "sixteen billion, six hundred forty-six million, one hundred five thousand, three hundred forty-five".