71036392599481 has 27 divisors (see below), whose sum is σ = 72653820471687. Its totient is φ = 69454660277760.

The previous prime is 71036392599457. The next prime is 71036392599521. The reversal of 71036392599481 is 18499529363017.

The square root of 71036392599481 is 8428309.

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

It can be written as a sum of positive squares in 13 ways, for example, as 71006053927081 + 30338672400 = 8426509^2 + 174180^2 .

It is not a de Polignac number, because 71036392599481 - 2³¹ = 71034245115833 is a prime.

It is a super-2 number, since 2×71036392599481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71036392590481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 119791555521 + ... + 119791556113.

It is a 1-persistent number, because it is pandigital, but 2⋅71036392599481 = 142072785198962 is not.

Almost surely, 2^{71036392599481} is an apocalyptic number.

71036392599481 is the 8428309-th square number.

71036392599481 is the 4214155-th centered octagonal number.

It is an amenable number.

71036392599481 is a deficient number, since it is larger than the sum of its proper divisors (1617427872206).

71036392599481 is an frugal number, since it uses more digits than its factorization.

71036392599481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 67.

The spelling of 71036392599481 in words is "seventy-one trillion, thirty-six billion, three hundred ninety-two million, five hundred ninety-nine thousand, four hundred eighty-one".