71221894920000 has 1120 divisors, whose sum is σ = 288049522147200. Its totient is φ = 17107200000000.

The previous prime is 71221894919971. The next prime is 71221894920017. The reversal of 71221894920000 is 2949812217.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1294892500 + ... + 1294947500.

Almost surely, 2^{71221894920000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71221894920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144024761073600).

71221894920000 is an abundant number, since it is smaller than the sum of its proper divisors (216827627227200).

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

71221894920000 is a wasteful number, since it uses less digits than its factorization.

71221894920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55162 (or 55131 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 71221894920000 in words is "seventy-one trillion, two hundred twenty-one billion, eight hundred ninety-four million, nine hundred twenty thousand".