68537983040288 has 96 divisors (see below), whose sum is σ = 140446318763520. Its totient is φ = 32903119641600.

The previous prime is 68537983040201. The next prime is 68537983040347. The reversal of 68537983040288 is 88204038973586.

It is a Cunningham number, because it is equal to 8278767²-1.

It is a super-2 number, since 2×68537983040288² (a number of 28 digits) contains 22 as substring.

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, 14487845 + ... + 18627227.

It is an arithmetic number, because the mean of its divisors is an integer number (1462982487120).

Almost surely, 2^{68537983040288} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68537983040288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70223159381760).

68537983040288 is an abundant number, since it is smaller than the sum of its proper divisors (71908335723232).

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

68537983040288 is a wasteful number, since it uses less digits than its factorization.

68537983040288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139650 (or 4139642 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 71.

The spelling of 68537983040288 in words is "sixty-eight trillion, five hundred thirty-seven billion, nine hundred eighty-three million, forty thousand, two hundred eighty-eight".