68400555505005 has 16 divisors (see below), whose sum is σ = 109442659434624. Its totient is φ = 36479706060480.

The previous prime is 68400555504997. The next prime is 68400555505081. The reversal of 68400555505005 is 50050555500486.

It is not a de Polignac number, because 68400555505005 - 2³ = 68400555504997 is a prime.

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, 35929209 + ... + 37785038.

It is an arithmetic number, because the mean of its divisors is an integer number (6840166214664).

Almost surely, 2^{68400555505005} is an apocalyptic number.

It is an amenable number.

68400555505005 is a deficient number, since it is larger than the sum of its proper divisors (41042103929619).

68400555505005 is a wasteful number, since it uses less digits than its factorization.

68400555505005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73776116.

The product of its (nonzero) digits is 3000000, while the sum is 48.

The spelling of 68400555505005 in words is "sixty-eight trillion, four hundred billion, five hundred fifty-five million, five hundred five thousand, five".