21133764170 has 8 divisors (see below), whose sum is σ = 38040775524. Its totient is φ = 8453505664.

The previous prime is 21133764161. The next prime is 21133764173. The reversal of 21133764170 is 7146733112.

It can be written as a sum of positive squares in 2 ways, for example, as 20338467769 + 795296401 = 142613^2 + 28201^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21133764170.

It is not an unprimeable number, because it can be changed into a prime (21133764173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056688199 + ... + 1056688218.

Almost surely, 2^21133764170 is an apocalyptic number.

21133764170 is a deficient number, since it is larger than the sum of its proper divisors (16907011354).

21133764170 is a wasteful number, since it uses less digits than its factorization.

21133764170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113376424.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 21133764170 in words is "twenty-one billion, one hundred thirty-three million, seven hundred sixty-four thousand, one hundred seventy".