68284049505 has 32 divisors (see below), whose sum is σ = 125380409088. Its totient is φ = 31086028800.

The previous prime is 68284049501. The next prime is 68284049507. The reversal of 68284049505 is 50594048286.

It is a happy number.

It is not a de Polignac number, because 68284049505 - 2² = 68284049501 is a prime.

It is a super-2 number, since 2×68284049505² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68284049501) 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 31 ways as a sum of consecutive naturals, for example, 1323916 + ... + 1374525.

It is an arithmetic number, because the mean of its divisors is an integer number (3918137784).

Almost surely, 2^68284049505 is an apocalyptic number.

It is an amenable number.

68284049505 is a deficient number, since it is larger than the sum of its proper divisors (57096359583).

68284049505 is a wasteful number, since it uses less digits than its factorization.

68284049505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698697.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 68284049505 in words is "sixty-eight billion, two hundred eighty-four million, forty-nine thousand, five hundred five".