71071305066 has 64 divisors (see below), whose sum is σ = 164871705600. Its totient is φ = 22650973488.

The previous prime is 71071305061. The next prime is 71071305083. The reversal of 71071305066 is 66050317017.

71071305066 is a `hidden beast` number, since 7 + 10 + 7 + 130 + 506 + 6 = 666.

It is a super-2 number, since 2×71071305066² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71071305066.

It is not an unprimeable number, because it can be changed into a prime (71071305061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3351525 + ... + 3372663.

It is an arithmetic number, because the mean of its divisors is an integer number (2576120400).

Almost surely, 2^71071305066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71071305066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82435852800).

71071305066 is an abundant number, since it is smaller than the sum of its proper divisors (93800400534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71071305066 is a wasteful number, since it uses less digits than its factorization.

71071305066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23880 (or 23874 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The spelling of 71071305066 in words is "seventy-one billion, seventy-one million, three hundred five thousand, sixty-six".