211968208077 has 16 divisors (see below), whose sum is σ = 287285070912. Its totient is φ = 138982187520.

The previous prime is 211968208033. The next prime is 211968208099. The reversal of 211968208077 is 770802869112.

It is not a de Polignac number, because 211968208077 - 2¹⁰ = 211968207053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211968208477) 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, 2076058 + ... + 2175764.

It is an arithmetic number, because the mean of its divisors is an integer number (17955316932).

Almost surely, 2^211968208077 is an apocalyptic number.

It is an amenable number.

211968208077 is a deficient number, since it is larger than the sum of its proper divisors (75316862835).

211968208077 is a wasteful number, since it uses less digits than its factorization.

211968208077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111388.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 211968208077 in words is "two hundred eleven billion, nine hundred sixty-eight million, two hundred eight thousand, seventy-seven".