71761390816 has 24 divisors (see below), whose sum is σ = 141325876440. Its totient is φ = 35869104768.

The previous prime is 71761390807. The next prime is 71761390829. The reversal of 71761390816 is 61809316717.

It is a self number, because there is not a number n which added to its sum of digits gives 71761390816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261166 + ... + 460141.

It is an arithmetic number, because the mean of its divisors is an integer number (5888578185).

Almost surely, 2^71761390816 is an apocalyptic number.

It is an amenable number.

71761390816 is a deficient number, since it is larger than the sum of its proper divisors (69564485624).

71761390816 is a wasteful number, since it uses less digits than its factorization.

71761390816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724426 (or 724418 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 71761390816 in words is "seventy-one billion, seven hundred sixty-one million, three hundred ninety thousand, eight hundred sixteen".