71855286416 has 40 divisors (see below), whose sum is σ = 144941058744. Its totient is φ = 34477747200.

The previous prime is 71855286397. The next prime is 71855286421. The reversal of 71855286416 is 61468255817.

It can be written as a sum of positive squares in 4 ways, for example, as 7645753600 + 64209532816 = 87440^2 + 253396^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788135 + ... + 874566.

Almost surely, 2^71855286416 is an apocalyptic number.

It is an amenable number.

71855286416 is an abundant number, since it is smaller than the sum of its proper divisors (73085772328).

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

71855286416 is a wasteful number, since it uses less digits than its factorization.

71855286416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662819 (or 1662813 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 71855286416 in words is "seventy-one billion, eight hundred fifty-five million, two hundred eighty-six thousand, four hundred sixteen".