71680212922 has 4 divisors (see below), whose sum is σ = 107520319386. Its totient is φ = 35840106460.

The previous prime is 71680212913. The next prime is 71680212941. The reversal of 71680212922 is 22921208617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22921208617 = 379 ⋅60478123.

It can be written as a sum of positive squares in only one way, i.e., 44872372561 + 26807840361 = 211831^2 + 163731^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17920053229 + ... + 17920053232.

Almost surely, 2^71680212922 is an apocalyptic number.

71680212922 is a deficient number, since it is larger than the sum of its proper divisors (35840106464).

71680212922 is a wasteful number, since it uses less digits than its factorization.

71680212922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35840106463.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 71680212922 in words is "seventy-one billion, six hundred eighty million, two hundred twelve thousand, nine hundred twenty-two".