71051171280 has 160 divisors (see below), whose sum is σ = 230589241344. Its totient is φ = 18063733248.

The previous prime is 71051171273. The next prime is 71051171287. The reversal of 71051171280 is 8217115017.

It is an interprime number because it is at equal distance from previous prime (71051171273) and next prime (71051171287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051171287) 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, 1673677 + ... + 1715603.

Almost surely, 2^71051171280 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 71051171280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115294620672).

71051171280 is an abundant number, since it is smaller than the sum of its proper divisors (159538070064).

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

71051171280 is a wasteful number, since it uses less digits than its factorization.

71051171280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42273 (or 42267 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 33.

Adding to 71051171280 its reverse (8217115017), we get a palindrome (79268286297).

The spelling of 71051171280 in words is "seventy-one billion, fifty-one million, one hundred seventy-one thousand, two hundred eighty".