68281408423127 has 4 divisors (see below), whose sum is σ = 68676098645400. Its totient is φ = 67886718200856.

The previous prime is 68281408423087. The next prime is 68281408423141. The reversal of 68281408423127 is 72132480418286.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68281408423127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68281408423147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197345110877 + ... + 197345111222.

It is an arithmetic number, because the mean of its divisors is an integer number (17169024661350).

Almost surely, 2^{68281408423127} is an apocalyptic number.

68281408423127 is a deficient number, since it is larger than the sum of its proper divisors (394690222273).

68281408423127 is a wasteful number, since it uses less digits than its factorization.

68281408423127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394690222272.

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 68281408423127 in words is "sixty-eight trillion, two hundred eighty-one billion, four hundred eight million, four hundred twenty-three thousand, one hundred twenty-seven".