16640210353 has 8 divisors (see below), whose sum is σ = 18538165800. Its totient is φ = 14830531968.

The previous prime is 16640210347. The next prime is 16640210401. The reversal of 16640210353 is 35301204661.

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 16635066529 = 2268^2 + 128977^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16640210353 - 2²¹ = 16638113201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16640210953) 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 in 7 ways as a sum of consecutive naturals, for example, 22068868 + ... + 22069621.

It is an arithmetic number, because the mean of its divisors is an integer number (2317270725).

Almost surely, 2^16640210353 is an apocalyptic number.

16640210353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16640210353 is a deficient number, since it is larger than the sum of its proper divisors (1897955447).

16640210353 is a wasteful number, since it uses less digits than its factorization.

16640210353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44138531.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 16640210353 in words is "sixteen billion, six hundred forty million, two hundred ten thousand, three hundred fifty-three".