68313205816 has 16 divisors (see below), whose sum is σ = 128142768600. Its totient is φ = 34141800864.

The previous prime is 68313205801. The next prime is 68313205861. The reversal of 68313205816 is 61850231386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830630 + ... + 1867573.

Almost surely, 2^68313205816 is an apocalyptic number.

It is an amenable number.

68313205816 is a deficient number, since it is larger than the sum of its proper divisors (59829562784).

68313205816 is a wasteful number, since it uses less digits than its factorization.

68313205816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700518 (or 3700514 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 68313205816 in words is "sixty-eight billion, three hundred thirteen million, two hundred five thousand, eight hundred sixteen".