211871147707 has 8 divisors (see below), whose sum is σ = 212433328800. Its totient is φ = 211309662720.

The previous prime is 211871147689. The next prime is 211871147731. The reversal of 211871147707 is 707741178112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211871147707 is a prime.

It is a super-2 number, since 2×211871147707² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211871147737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438363 + ... + 784795.

It is an arithmetic number, because the mean of its divisors is an integer number (26554166100).

Almost surely, 2^211871147707 is an apocalyptic number.

211871147707 is a deficient number, since it is larger than the sum of its proper divisors (562181093).

211871147707 is a wasteful number, since it uses less digits than its factorization.

211871147707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348053.

The product of its (nonzero) digits is 153664, while the sum is 46.

The spelling of 211871147707 in words is "two hundred eleven billion, eight hundred seventy-one million, one hundred forty-seven thousand, seven hundred seven".