71012171700 has 108 divisors (see below), whose sum is σ = 222743079468. Its totient is φ = 18923020800.

The previous prime is 71012171689. The next prime is 71012171717. The reversal of 71012171700 is 717121017.

It can be written as a sum of positive squares in 6 ways, for example, as 24029604 + 70988142096 = 4902^2 + 266436^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1262170 + ... + 1317230.

It is an arithmetic number, because the mean of its divisors is an integer number (2062435921).

Almost surely, 2^71012171700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71012171700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111371539734).

71012171700 is an abundant number, since it is smaller than the sum of its proper divisors (151730907768).

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

71012171700 is a wasteful number, since it uses less digits than its factorization.

71012171700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56514 (or 56504 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 27.

Adding to 71012171700 its reverse (717121017), we get a palindrome (71729292717).

The spelling of 71012171700 in words is "seventy-one billion, twelve million, one hundred seventy-one thousand, seven hundred".