71310265073520 has 80 divisors (see below), whose sum is σ = 241158350984832. Its totient is φ = 17287336986880.

The previous prime is 71310265073519. The next prime is 71310265073713. The reversal of 71310265073520 is 2537056201317.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13505729382 + ... + 13505734661.

Almost surely, 2^{71310265073520} is an apocalyptic number.

It is an amenable number.

71310265073520 is an abundant number, since it is smaller than the sum of its proper divisors (169848085911312).

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

71310265073520 is a wasteful number, since it uses less digits than its factorization.

71310265073520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27011464070 (or 27011464064 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 42.

The spelling of 71310265073520 in words is "seventy-one trillion, three hundred ten billion, two hundred sixty-five million, seventy-three thousand, five hundred twenty".