71011521206 has 8 divisors (see below), whose sum is σ = 106605098544. Its totient is φ = 35476488360.

The previous prime is 71011521193. The next prime is 71011521221. The reversal of 71011521206 is 60212511017.

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

It is a super-2 number, since 2×71011521206² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14633090 + ... + 14637941.

It is an arithmetic number, because the mean of its divisors is an integer number (13325637318).

Almost surely, 2^71011521206 is an apocalyptic number.

71011521206 is a deficient number, since it is larger than the sum of its proper divisors (35593577338).

71011521206 is a wasteful number, since it uses less digits than its factorization.

71011521206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29272246.

The product of its (nonzero) digits is 840, while the sum is 26.

The spelling of 71011521206 in words is "seventy-one billion, eleven million, five hundred twenty-one thousand, two hundred six".