68278496340 has 96 divisors (see below), whose sum is σ = 197484650496. Its totient is φ = 17607957120.

The previous prime is 68278496333. The next prime is 68278496359. The reversal of 68278496340 is 4369487286.

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, 2820729 + ... + 2844831.

It is an arithmetic number, because the mean of its divisors is an integer number (2057131776).

Almost surely, 2^68278496340 is an apocalyptic number.

68278496340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68278496340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98742325248).

68278496340 is an abundant number, since it is smaller than the sum of its proper divisors (129206154156).

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

68278496340 is a wasteful number, since it uses less digits than its factorization.

68278496340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25669 (or 25667 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 68278496340 in words is "sixty-eight billion, two hundred seventy-eight million, four hundred ninety-six thousand, three hundred forty".