71500864434 has 32 divisors (see below), whose sum is σ = 153237873600. Its totient is φ = 22161380352.

The previous prime is 71500864423. The next prime is 71500864439. The reversal of 71500864434 is 43446800517.

It is a super-2 number, since 2×71500864434² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71500864439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4214359 + ... + 4231290.

It is an arithmetic number, because the mean of its divisors is an integer number (4788683550).

Almost surely, 2^71500864434 is an apocalyptic number.

71500864434 is an abundant number, since it is smaller than the sum of its proper divisors (81737009166).

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

71500864434 is a wasteful number, since it uses less digits than its factorization.

71500864434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445754.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 71500864434 in words is "seventy-one billion, five hundred million, eight hundred sixty-four thousand, four hundred thirty-four".