71670202211 has 4 divisors (see below), whose sum is σ = 71691453792. Its totient is φ = 71648950632.

The previous prime is 71670202187. The next prime is 71670202213. The reversal of 71670202211 is 11220207617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11220207617 = 19 ⋅590537243.

It is a cyclic number.

It is not a de Polignac number, because 71670202211 - 2⁶ = 71670202147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71670202213) 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, 10620731 + ... + 10627476.

It is an arithmetic number, because the mean of its divisors is an integer number (17922863448).

Almost surely, 2^71670202211 is an apocalyptic number.

71670202211 is a deficient number, since it is larger than the sum of its proper divisors (21251581).

71670202211 is a wasteful number, since it uses less digits than its factorization.

71670202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21251580.

The product of its (nonzero) digits is 2352, while the sum is 29.

Adding to 71670202211 its reverse (11220207617), we get a palindrome (82890409828).

The spelling of 71670202211 in words is "seventy-one billion, six hundred seventy million, two hundred two thousand, two hundred eleven".