71015385084 has 96 divisors (see below), whose sum is σ = 196498498560. Its totient is φ = 19538122752.

The previous prime is 71015385073. The next prime is 71015385137. The reversal of 71015385084 is 48058351017.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183697 + ... + 419255.

It is an arithmetic number, because the mean of its divisors is an integer number (2046859360).

Almost surely, 2^71015385084 is an apocalyptic number.

71015385084 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71015385084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98249249280).

71015385084 is an abundant number, since it is smaller than the sum of its proper divisors (125483113476).

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

71015385084 is a wasteful number, since it uses less digits than its factorization.

71015385084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235707 (or 235705 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 71015385084 in words is "seventy-one billion, fifteen million, three hundred eighty-five thousand, eighty-four".