71017838320 has 160 divisors (see below), whose sum is σ = 194272565760. Its totient is φ = 23802577920.

The previous prime is 71017838303. The next prime is 71017838321. The reversal of 71017838320 is 2383871017.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71017838321) 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, 8312611 + ... + 8321149.

It is an arithmetic number, because the mean of its divisors is an integer number (1214203536).

Almost surely, 2^71017838320 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 71017838320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97136282880).

71017838320 is an abundant number, since it is smaller than the sum of its proper divisors (123254727440).

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

71017838320 is a wasteful number, since it uses less digits than its factorization.

71017838320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303 (or 9297 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 71017838320 in words is "seventy-one billion, seventeen million, eight hundred thirty-eight thousand, three hundred twenty".