71215875243648 has 128 divisors (see below), whose sum is σ = 221248150632000. Its totient is φ = 22489223740416.

The previous prime is 71215875243613. The next prime is 71215875243659. The reversal of 71215875243648 is 84634257851217.

71215875243648 is a `hidden beast` number, since 7 + 1 + 2 + 1 + 587 + 5 + 2 + 4 + 3 + 6 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542209215 + ... + 542340542.

Almost surely, 2^{71215875243648} is an apocalyptic number.

It is an amenable number.

71215875243648 is an abundant number, since it is smaller than the sum of its proper divisors (150032275388352).

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

71215875243648 is a wasteful number, since it uses less digits than its factorization.

71215875243648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084549799 (or 1084549781 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 63.

The spelling of 71215875243648 in words is "seventy-one trillion, two hundred fifteen billion, eight hundred seventy-five million, two hundred forty-three thousand, six hundred forty-eight".