71065670016 has 128 divisors (see below), whose sum is σ = 207819532800. Its totient is φ = 21337344000.

The previous prime is 71065670003. The next prime is 71065670023. The reversal of 71065670016 is 61007656017.

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

It is a congruent number.

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, 383241 + ... + 537591.

It is an arithmetic number, because the mean of its divisors is an integer number (1623590100).

Almost surely, 2^71065670016 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 71065670016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103909766400).

71065670016 is an abundant number, since it is smaller than the sum of its proper divisors (136753862784).

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

71065670016 is a wasteful number, since it uses less digits than its factorization.

71065670016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154488 (or 154476 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 71065670016 in words is "seventy-one billion, sixty-five million, six hundred seventy thousand, sixteen".