71845055776 has 96 divisors (see below), whose sum is σ = 155732129280. Its totient is φ = 32419163136.

The previous prime is 71845055749. The next prime is 71845055783. The reversal of 71845055776 is 67755054817.

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, 30480390 + ... + 30482746.

It is an arithmetic number, because the mean of its divisors is an integer number (1622209680).

Almost surely, 2^71845055776 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 71845055776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77866064640).

71845055776 is an abundant number, since it is smaller than the sum of its proper divisors (83887073504).

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

71845055776 is a wasteful number, since it uses less digits than its factorization.

71845055776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3978 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 55.

The spelling of 71845055776 in words is "seventy-one billion, eight hundred forty-five million, fifty-five thousand, seven hundred seventy-six".