71551056516 has 12 divisors (see below), whose sum is σ = 166952465232. Its totient is φ = 23850352168.

The previous prime is 71551056491. The next prime is 71551056553. The reversal of 71551056516 is 61565015517.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981294010 + ... + 2981294033.

It is an arithmetic number, because the mean of its divisors is an integer number (13912705436).

Almost surely, 2^71551056516 is an apocalyptic number.

It is an amenable number.

71551056516 is an abundant number, since it is smaller than the sum of its proper divisors (95401408716).

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

71551056516 is a wasteful number, since it uses less digits than its factorization.

71551056516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962588050 (or 5962588048 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 71551056516 in words is "seventy-one billion, five hundred fifty-one million, fifty-six thousand, five hundred sixteen".