68583328587 has 16 divisors (see below), whose sum is σ = 106952560000. Its totient is φ = 43315786152.

The previous prime is 68583328559. The next prime is 68583328589. The reversal of 68583328587 is 78582338586.

It is not a de Polignac number, because 68583328587 - 2¹⁶ = 68583263051 is a prime.

It is a super-2 number, since 2×68583328587² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68583328589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66844837 + ... + 66845862.

It is an arithmetic number, because the mean of its divisors is an integer number (6684535000).

Almost surely, 2^68583328587 is an apocalyptic number.

68583328587 is a deficient number, since it is larger than the sum of its proper divisors (38369231413).

68583328587 is a wasteful number, since it uses less digits than its factorization.

68583328587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133690727 (or 133690721 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

Subtracting 68583328587 from its reverse (78582338586), we obtain a palindrome (9999009999).

The spelling of 68583328587 in words is "sixty-eight billion, five hundred eighty-three million, three hundred twenty-eight thousand, five hundred eighty-seven".