68739768993024 has 144 divisors (see below), whose sum is σ = 203360372544000. Its totient is φ = 22903699636224.

The previous prime is 68739768992977. The next prime is 68739768993037. The reversal of 68739768993024 is 42039986793786.

68739768993024 is a `hidden beast` number, since 6 + 87 + 3 + 97 + 68 + 99 + 302 + 4 = 666.

It is a Cunningham number, because it is equal to 8290945²-1.

It is a tau number, because it is divible by the number of its divisors (144).

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, 14509152 + ... + 18654624.

Almost surely, 2^{68739768993024} is an apocalyptic number.

68739768993024 is a gapful number since it is divisible by the number (64) 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 68739768993024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101680186272000).

68739768993024 is an abundant number, since it is smaller than the sum of its proper divisors (134620603550976).

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

68739768993024 is a wasteful number, since it uses less digits than its factorization.

68739768993024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147897 (or 4147877 counting only the distinct ones).

The product of its (nonzero) digits is 5925685248, while the sum is 81.

The spelling of 68739768993024 in words is "sixty-eight trillion, seven hundred thirty-nine billion, seven hundred sixty-eight million, nine hundred ninety-three thousand, twenty-four".