211172070671 has 16 divisors (see below), whose sum is σ = 231981580800. Its totient is φ = 191334372768.

The previous prime is 211172070661. The next prime is 211172070719. The reversal of 211172070671 is 176070271112.

It is a cyclic number.

It is not a de Polignac number, because 211172070671 - 2⁶ = 211172070607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211172070661) 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, 3821225 + ... + 3876093.

It is an arithmetic number, because the mean of its divisors is an integer number (14498848800).

Almost surely, 2^211172070671 is an apocalyptic number.

211172070671 is a deficient number, since it is larger than the sum of its proper divisors (20809510129).

211172070671 is a wasteful number, since it uses less digits than its factorization.

211172070671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63718.

The product of its (nonzero) digits is 8232, while the sum is 35.

The spelling of 211172070671 in words is "two hundred eleven billion, one hundred seventy-two million, seventy thousand, six hundred seventy-one".