71512741734 has 64 divisors (see below), whose sum is σ = 165504729600. Its totient is φ = 20176565760.

The previous prime is 71512741721. The next prime is 71512741753. The reversal of 71512741734 is 43714721517.

It is a super-2 number, since 2×71512741734² (a number of 23 digits) contains 22 as substring.

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, 11085742 + ... + 11092190.

It is an arithmetic number, because the mean of its divisors is an integer number (2586011400).

Almost surely, 2^71512741734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71512741734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82752364800).

71512741734 is an abundant number, since it is smaller than the sum of its proper divisors (93991987866).

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

71512741734 is a wasteful number, since it uses less digits than its factorization.

71512741734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9725.

The product of its digits is 164640, while the sum is 42.

The spelling of 71512741734 in words is "seventy-one billion, five hundred twelve million, seven hundred forty-one thousand, seven hundred thirty-four".