71647863416 has 16 divisors (see below), whose sum is σ = 134343322800. Its totient is φ = 35822977344.

The previous prime is 71647863377. The next prime is 71647863433. The reversal of 71647863416 is 61436874617.

It is a happy number.

It is a congruent number.

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, 277340 + ... + 469268.

It is an arithmetic number, because the mean of its divisors is an integer number (8396457675).

Almost surely, 2^71647863416 is an apocalyptic number.

It is an amenable number.

71647863416 is a deficient number, since it is larger than the sum of its proper divisors (62695459384).

71647863416 is a wasteful number, since it uses less digits than its factorization.

71647863416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238598 (or 238594 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 53.

The spelling of 71647863416 in words is "seventy-one billion, six hundred forty-seven million, eight hundred sixty-three thousand, four hundred sixteen".