71435779208 has 16 divisors (see below), whose sum is σ = 133945993500. Its totient is φ = 35716847616.

The previous prime is 71435779139. The next prime is 71435779211. The reversal of 71435779208 is 80297753417.

It can be written as a sum of positive squares in 2 ways, for example, as 69697056004 + 1738723204 = 264002^2 + 41698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71435779208.

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 3 ways as a sum of consecutive naturals, for example, 214928 + ... + 434816.

Almost surely, 2^71435779208 is an apocalyptic number.

It is an amenable number.

71435779208 is a deficient number, since it is larger than the sum of its proper divisors (62510214292).

71435779208 is a wasteful number, since it uses less digits than its factorization.

71435779208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260504 (or 260500 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 71435779208 in words is "seventy-one billion, four hundred thirty-five million, seven hundred seventy-nine thousand, two hundred eight".