71338136464 has 45 divisors (see below), whose sum is σ = 160800641787. Its totient is φ = 30570281952.

The previous prime is 71338136453. The next prime is 71338136503. The reversal of 71338136464 is 46463183317.

The square root of 71338136464 is 267092.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7473807 + ... + 7483345.

Almost surely, 2^71338136464 is an apocalyptic number.

71338136464 is the 267092-nd square number.

It is an amenable number.

71338136464 is an abundant number, since it is smaller than the sum of its proper divisors (89462505323).

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

71338136464 is an frugal number, since it uses more digits than its factorization.

71338136464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100 (or 9548 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 71338136464 in words is "seventy-one billion, three hundred thirty-eight million, one hundred thirty-six thousand, four hundred sixty-four".