68076728642 has 16 divisors (see below), whose sum is σ = 115758000960. Its totient is φ = 29766342672.

The previous prime is 68076728609. The next prime is 68076728647. The reversal of 68076728642 is 24682767086.

68076728642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (68076728647) 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, 68903078 + ... + 68904065.

It is an arithmetic number, because the mean of its divisors is an integer number (7234875060).

Almost surely, 2^68076728642 is an apocalyptic number.

68076728642 is a deficient number, since it is larger than the sum of its proper divisors (47681272318).

68076728642 is a wasteful number, since it uses less digits than its factorization.

68076728642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137807177.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 68076728642 in words is "sixty-eight billion, seventy-six million, seven hundred twenty-eight thousand, six hundred forty-two".