68637530069790 has 256 divisors, whose sum is σ = 184402893717504. Its totient is φ = 16206710284800.

The previous prime is 68637530069767. The next prime is 68637530069863. The reversal of 68637530069790 is 9796003573686.

It is a super-2 number, since 2×68637530069790² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7814811739 + ... + 7814820521.

It is an arithmetic number, because the mean of its divisors is an integer number (720323803584).

Almost surely, 2^{68637530069790} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68637530069790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92201446858752).

68637530069790 is an abundant number, since it is smaller than the sum of its proper divisors (115765363647714).

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

68637530069790 is a wasteful number, since it uses less digits than its factorization.

68637530069790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335.

The product of its (nonzero) digits is 308629440, while the sum is 69.

The spelling of 68637530069790 in words is "sixty-eight trillion, six hundred thirty-seven billion, five hundred thirty million, sixty-nine thousand, seven hundred ninety".