71978062416 has 40 divisors (see below), whose sum is σ = 200246662560. Its totient is φ = 22147095936.

The previous prime is 71978062367. The next prime is 71978062421. The reversal of 71978062416 is 61426087917.

It is a congruent number.

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, 57674106 + ... + 57675353.

It is an arithmetic number, because the mean of its divisors is an integer number (5006166564).

Almost surely, 2^71978062416 is an apocalyptic number.

It is an amenable number.

71978062416 is an abundant number, since it is smaller than the sum of its proper divisors (128268600144).

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

71978062416 is a wasteful number, since it uses less digits than its factorization.

71978062416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115349483 (or 115349477 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 71978062416 in words is "seventy-one billion, nine hundred seventy-eight million, sixty-two thousand, four hundred sixteen".