68012855011 has 4 divisors (see below), whose sum is σ = 68026162072. Its totient is φ = 67999547952.

The previous prime is 68012855003. The next prime is 68012855021. The reversal of 68012855011 is 11055821086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11055821086 = 2 ⋅5527910543.

It is a cyclic number.

It is not a de Polignac number, because 68012855011 - 2³ = 68012855003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68012855021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6645861 + ... + 6656086.

It is an arithmetic number, because the mean of its divisors is an integer number (17006540518).

Almost surely, 2^68012855011 is an apocalyptic number.

68012855011 is a deficient number, since it is larger than the sum of its proper divisors (13307061).

68012855011 is a wasteful number, since it uses less digits than its factorization.

68012855011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13307060.

The product of its (nonzero) digits is 19200, while the sum is 37.

The spelling of 68012855011 in words is "sixty-eight billion, twelve million, eight hundred fifty-five thousand, eleven".