68351919364 has 27 divisors (see below), whose sum is σ = 122970900927. Its totient is φ = 33242873184.

The previous prime is 68351919347. The next prime is 68351919371. The reversal of 68351919364 is 46391915386.

The square root of 68351919364 is 261442.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 35140501764 + 33211417600 = 187458^2 + 182240^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 19344942 + ... + 19348474.

Almost surely, 2^68351919364 is an apocalyptic number.

68351919364 is the 261442-nd square number.

It is an amenable number.

68351919364 is a deficient number, since it is larger than the sum of its proper divisors (54618981563).

68351919364 is an frugal number, since it uses more digits than its factorization.

68351919364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144 (or 3572 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 55.

It can be divided in two parts, 68351 and 919364, that added together give a triangular number (987715 = T₁₄₀₅).

The spelling of 68351919364 in words is "sixty-eight billion, three hundred fifty-one million, nine hundred nineteen thousand, three hundred sixty-four".