71894603216 has 20 divisors (see below), whose sum is σ = 139333464900. Its totient is φ = 35937580032.

The previous prime is 71894603201. The next prime is 71894603299. The reversal of 71894603216 is 61230649817.

It can be written as a sum of positive squares in 2 ways, for example, as 30066172816 + 41828430400 = 173396^2 + 204520^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546401 + ... + 665088.

It is an arithmetic number, because the mean of its divisors is an integer number (6966673245).

Almost surely, 2^71894603216 is an apocalyptic number.

It is an amenable number.

71894603216 is a deficient number, since it is larger than the sum of its proper divisors (67438861684).

71894603216 is a wasteful number, since it uses less digits than its factorization.

71894603216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215206 (or 1215200 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 71894603216 in words is "seventy-one billion, eight hundred ninety-four million, six hundred three thousand, two hundred sixteen".