71856237612 has 96 divisors (see below), whose sum is σ = 181959321600. Its totient is φ = 22009059072.

The previous prime is 71856237611. The next prime is 71856237631. The reversal of 71856237612 is 21673265817.

It is not an unprimeable number, because it can be changed into a prime (71856237611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 762214 + ... + 851282.

It is an arithmetic number, because the mean of its divisors is an integer number (1895409600).

Almost surely, 2^71856237612 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 71856237612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90979660800).

71856237612 is an abundant number, since it is smaller than the sum of its proper divisors (110103083988).

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

71856237612 is a wasteful number, since it uses less digits than its factorization.

71856237612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89215 (or 89213 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The spelling of 71856237612 in words is "seventy-one billion, eight hundred fifty-six million, two hundred thirty-seven thousand, six hundred twelve".