68284029608421 has 16 divisors (see below), whose sum is σ = 99322617849408. Its totient is φ = 41384096633600.

The previous prime is 68284029608393. The next prime is 68284029608479. The reversal of 68284029608421 is 12480692048286.

68284029608421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 68284029608421 - 2²¹ = 68284027511269 is a prime.

It is a super-2 number, since 2×68284029608421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68284029606421) 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, 4652701 + ... + 12578381.

It is an arithmetic number, because the mean of its divisors is an integer number (6207663615588).

Almost surely, 2^{68284029608421} is an apocalyptic number.

It is an amenable number.

68284029608421 is a deficient number, since it is larger than the sum of its proper divisors (31038588240987).

68284029608421 is a wasteful number, since it uses less digits than its factorization.

68284029608421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8186772.

The product of its (nonzero) digits is 21233664, while the sum is 60.

The spelling of 68284029608421 in words is "sixty-eight trillion, two hundred eighty-four billion, twenty-nine million, six hundred eight thousand, four hundred twenty-one".