68499815424 has 44 divisors (see below), whose sum is σ = 182576990184. Its totient is φ = 22833270784.

The previous prime is 68499815413. The next prime is 68499815471. The reversal of 68499815424 is 42451899486.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11145987 + ... + 11152130.

Almost surely, 2^68499815424 is an apocalyptic number.

68499815424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68499815424 is an abundant number, since it is smaller than the sum of its proper divisors (114077174760).

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

68499815424 is a wasteful number, since it uses less digits than its factorization.

68499815424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22298140 (or 22298122 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 60.

The spelling of 68499815424 in words is "sixty-eight billion, four hundred ninety-nine million, eight hundred fifteen thousand, four hundred twenty-four".