71775056544 has 24 divisors (see below), whose sum is σ = 188409523680. Its totient is φ = 23925018816.

The previous prime is 71775056539. The next prime is 71775056593. The reversal of 71775056544 is 44565057717.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373828324 + ... + 373828515.

It is an arithmetic number, because the mean of its divisors is an integer number (7850396820).

Almost surely, 2^71775056544 is an apocalyptic number.

It is an amenable number.

71775056544 is an abundant number, since it is smaller than the sum of its proper divisors (116634467136).

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

71775056544 is a wasteful number, since it uses less digits than its factorization.

71775056544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747656852 (or 747656844 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 71775056544 in words is "seventy-one billion, seven hundred seventy-five million, fifty-six thousand, five hundred forty-four".