68386828455 has 48 divisors (see below), whose sum is σ = 136919955744. Its totient is φ = 31206819840.

The previous prime is 68386828453. The next prime is 68386828463. The reversal of 68386828455 is 55482868386.

68386828455 is a `hidden beast` number, since 6 + 83 + 86 + 8 + 28 + 455 = 666.

It is not a de Polignac number, because 68386828455 - 2¹ = 68386828453 is a prime.

It is a super-2 number, since 2×68386828455² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68386828392 and 68386828401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68386828453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4054974 + ... + 4071803.

It is an arithmetic number, because the mean of its divisors is an integer number (2852499078).

Almost surely, 2^68386828455 is an apocalyptic number.

68386828455 is an abundant number, since it is smaller than the sum of its proper divisors (68533127289).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68386828455 is a wasteful number, since it uses less digits than its factorization.

68386828455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126816 (or 8126813 counting only the distinct ones).

The product of its digits is 88473600, while the sum is 63.

The spelling of 68386828455 in words is "sixty-eight billion, three hundred eighty-six million, eight hundred twenty-eight thousand, four hundred fifty-five".