71448171220856 has 32 divisors (see below), whose sum is σ = 134056457430240. Its totient is φ = 35699784075648.

The previous prime is 71448171220849. The next prime is 71448171220873. The reversal of 71448171220856 is 65802217184417.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486243110 + ... + 486390026.

It is an arithmetic number, because the mean of its divisors is an integer number (4189264294695).

Almost surely, 2^{71448171220856} is an apocalyptic number.

It is an amenable number.

71448171220856 is a deficient number, since it is larger than the sum of its proper divisors (62608286209384).

71448171220856 is a wasteful number, since it uses less digits than its factorization.

71448171220856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187863 (or 187859 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 71448171220856 in words is "seventy-one trillion, four hundred forty-eight billion, one hundred seventy-one million, two hundred twenty thousand, eight hundred fifty-six".