190911212017 has 16 divisors (see below), whose sum is σ = 200542043520. Its totient is φ = 181391962752.

The previous prime is 190911212003. The next prime is 190911212021. The reversal of 190911212017 is 710212119091.

It is a cyclic number.

It is not a de Polignac number, because 190911212017 - 2¹¹ = 190911209969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190911212617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16326709 + ... + 16338397.

It is an arithmetic number, because the mean of its divisors is an integer number (12533877720).

Almost surely, 2^190911212017 is an apocalyptic number.

It is an amenable number.

190911212017 is a deficient number, since it is larger than the sum of its proper divisors (9630831503).

190911212017 is a wasteful number, since it uses less digits than its factorization.

190911212017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16392.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 190911212017 in words is "one hundred ninety billion, nine hundred eleven million, two hundred twelve thousand, seventeen".