68807138065 has 8 divisors (see below), whose sum is σ = 82570184640. Its totient is φ = 55044631152.

The previous prime is 68807138051. The next prime is 68807138219. The reversal of 68807138065 is 56083170886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68807138065 - 2⁷ = 68807137937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240622 + ... + 442168.

It is an arithmetic number, because the mean of its divisors is an integer number (10321273080).

Almost surely, 2^68807138065 is an apocalyptic number.

It is an amenable number.

68807138065 is a deficient number, since it is larger than the sum of its proper divisors (13763046575).

68807138065 is a wasteful number, since it uses less digits than its factorization.

68807138065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269831.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 68807138065 in words is "sixty-eight billion, eight hundred seven million, one hundred thirty-eight thousand, sixty-five".