68276588642 has 4 divisors (see below), whose sum is σ = 102414882966. Its totient is φ = 34138294320.

The previous prime is 68276588641. The next prime is 68276588647. The reversal of 68276588642 is 24688567286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24688567286 = 2 ⋅12344283643.

It can be written as a sum of positive squares in only one way, i.e., 67496559601 + 780029041 = 259801^2 + 27929^2 .

It is not an unprimeable number, because it can be changed into a prime (68276588641) by changing a digit.

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 as a sum of consecutive naturals, namely, 17069147159 + ... + 17069147162.

Almost surely, 2^68276588642 is an apocalyptic number.

68276588642 is a deficient number, since it is larger than the sum of its proper divisors (34138294324).

68276588642 is a wasteful number, since it uses less digits than its factorization.

68276588642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34138294323.

The product of its digits is 61931520, while the sum is 62.

The spelling of 68276588642 in words is "sixty-eight billion, two hundred seventy-six million, five hundred eighty-eight thousand, six hundred forty-two".