68535142405 has 32 divisors (see below), whose sum is σ = 88108020864. Its totient is φ = 50996391936.

The previous prime is 68535142373. The next prime is 68535142433. The reversal of 68535142405 is 50424153586.

It is a cyclic number.

It is not a de Polignac number, because 68535142405 - 2⁵ = 68535142373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3322654 + ... + 3343216.

It is an arithmetic number, because the mean of its divisors is an integer number (2753375652).

Almost surely, 2^68535142405 is an apocalyptic number.

It is an amenable number.

68535142405 is a deficient number, since it is larger than the sum of its proper divisors (19572878459).

68535142405 is a wasteful number, since it uses less digits than its factorization.

68535142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 68535142405 in words is "sixty-eight billion, five hundred thirty-five million, one hundred forty-two thousand, four hundred five".