71565070056 has 32 divisors (see below), whose sum is σ = 178919249760. Its totient is φ = 23854146752.

The previous prime is 71565070039. The next prime is 71565070061. The reversal of 71565070056 is 65007056517.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1178371 + ... + 1237613.

It is an arithmetic number, because the mean of its divisors is an integer number (5591226555).

Almost surely, 2^71565070056 is an apocalyptic number.

It is an amenable number.

71565070056 is an abundant number, since it is smaller than the sum of its proper divisors (107354179704).

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

71565070056 is a wasteful number, since it uses less digits than its factorization.

71565070056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109585 (or 109581 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 42.

The spelling of 71565070056 in words is "seventy-one billion, five hundred sixty-five million, seventy thousand, fifty-six".