68338527540 has 48 divisors (see below), whose sum is σ = 194958223488. Its totient is φ = 17879764864.

The previous prime is 68338527539. The next prime is 68338527577. The reversal of 68338527540 is 4572583386.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10741872 + ... + 10748231.

It is an arithmetic number, because the mean of its divisors is an integer number (4061629656).

Almost surely, 2^68338527540 is an apocalyptic number.

68338527540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68338527540 is an abundant number, since it is smaller than the sum of its proper divisors (126619695948).

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

68338527540 is a wasteful number, since it uses less digits than its factorization.

68338527540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21490168 (or 21490166 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 68338527540 in words is "sixty-eight billion, three hundred thirty-eight million, five hundred twenty-seven thousand, five hundred forty".