71212940378176 has 189 divisors, whose sum is σ = 145894256055583. Its totient is φ = 34488264858880.

The previous prime is 71212940378159. The next prime is 71212940378201. The reversal of 71212940378176 is 67187304921217.

The square root of 71212940378176 is 8438776.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71212940378176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 397837655655 + ... + 397837655833.

Almost surely, 2^{71212940378176} is an apocalyptic number.

71212940378176 is the 8438776-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71212940378176

71212940378176 is an abundant number, since it is smaller than the sum of its proper divisors (74681315677407).

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

71212940378176 is an frugal number, since it uses more digits than its factorization.

71212940378176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 71212940378176 in words is "seventy-one trillion, two hundred twelve billion, nine hundred forty million, three hundred seventy-eight thousand, one hundred seventy-six".