68781308594 has 16 divisors (see below), whose sum is σ = 107689091328. Its totient is φ = 32885816832.

The previous prime is 68781308591. The next prime is 68781308633. The reversal of 68781308594 is 49580318786.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68781308591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57242 + ... + 375285.

It is an arithmetic number, because the mean of its divisors is an integer number (6730568208).

Almost surely, 2^68781308594 is an apocalyptic number.

68781308594 is a deficient number, since it is larger than the sum of its proper divisors (38907782734).

68781308594 is a wasteful number, since it uses less digits than its factorization.

68781308594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436009.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 68781308594 in words is "sixty-eight billion, seven hundred eighty-one million, three hundred eight thousand, five hundred ninety-four".