71845160912 has 80 divisors (see below), whose sum is σ = 169574860800. Its totient is φ = 28784953344.

The previous prime is 71845160857. The next prime is 71845160993. The reversal of 71845160912 is 21906154817.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157073 + ... + 410319.

It is an arithmetic number, because the mean of its divisors is an integer number (2119685760).

Almost surely, 2^71845160912 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 71845160912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84787430400).

71845160912 is an abundant number, since it is smaller than the sum of its proper divisors (97729699888).

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

71845160912 is a wasteful number, since it uses less digits than its factorization.

71845160912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253428 (or 253422 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 71845160912 in words is "seventy-one billion, eight hundred forty-five million, one hundred sixty thousand, nine hundred twelve".