21116670167105 has 8 divisors (see below), whose sum is σ = 26213797449000. Its totient is φ = 16310807301376.

The previous prime is 21116670167081. The next prime is 21116670167137. The reversal of 21116670167105 is 50176107661112.

It can be written as a sum of positive squares in 4 ways, for example, as 236778586801 + 20879891580304 = 486599^2 + 4569452^2 .

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 21116670167105 - 2¹⁴ = 21116670150721 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, 72816103880 + ... + 72816104169.

It is an arithmetic number, because the mean of its divisors is an integer number (3276724681125).

Almost surely, 2^{21116670167105} is an apocalyptic number.

It is an amenable number.

21116670167105 is a deficient number, since it is larger than the sum of its proper divisors (5097127281895).

21116670167105 is a wasteful number, since it uses less digits than its factorization.

21116670167105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145632208083.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 21116670167105 in words is "twenty-one trillion, one hundred sixteen billion, six hundred seventy million, one hundred sixty-seven thousand, one hundred five".