68756406535 has 16 divisors (see below), whose sum is σ = 83052689760. Its totient is φ = 54642107520.

The previous prime is 68756406533. The next prime is 68756406553. The reversal of 68756406535 is 53560465786.

It is not a de Polignac number, because 68756406535 - 2¹ = 68756406533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68756406533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830645 + ... + 1867825.

It is an arithmetic number, because the mean of its divisors is an integer number (5190793110).

Almost surely, 2^68756406535 is an apocalyptic number.

68756406535 is a deficient number, since it is larger than the sum of its proper divisors (14296283225).

68756406535 is a wasteful number, since it uses less digits than its factorization.

68756406535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39618.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 68756406535 in words is "sixty-eight billion, seven hundred fifty-six million, four hundred six thousand, five hundred thirty-five".