71544588340 has 12 divisors (see below), whose sum is σ = 150243635556. Its totient is φ = 28617835328.

The previous prime is 71544588287. The next prime is 71544588343. The reversal of 71544588340 is 4388544517.

It can be written as a sum of positive squares in 2 ways, for example, as 46350645264 + 25193943076 = 215292^2 + 158726^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71544588343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788614689 + ... + 1788614728.

It is an arithmetic number, because the mean of its divisors is an integer number (12520302963).

Almost surely, 2^71544588340 is an apocalyptic number.

It is an amenable number.

71544588340 is an abundant number, since it is smaller than the sum of its proper divisors (78699047216).

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

71544588340 is a wasteful number, since it uses less digits than its factorization.

71544588340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577229426 (or 3577229424 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 71544588340 in words is "seventy-one billion, five hundred forty-four million, five hundred eighty-eight thousand, three hundred forty".