211068687849 has 4 divisors (see below), whose sum is σ = 281424917136. Its totient is φ = 140712458564.

The previous prime is 211068687829. The next prime is 211068687853. The reversal of 211068687849 is 948786860112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211068687849 - 2⁸ = 211068687593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211068687792 and 211068687801.

It is not an unprimeable number, because it can be changed into a prime (211068687829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35178114639 + ... + 35178114644.

It is an arithmetic number, because the mean of its divisors is an integer number (70356229284).

Almost surely, 2^211068687849 is an apocalyptic number.

It is an amenable number.

211068687849 is a deficient number, since it is larger than the sum of its proper divisors (70356229287).

211068687849 is an equidigital number, since it uses as much as digits as its factorization.

211068687849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70356229286.

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 211068687849 in words is "two hundred eleven billion, sixty-eight million, six hundred eighty-seven thousand, eight hundred forty-nine".