68000755505 has 4 divisors (see below), whose sum is σ = 81600906612. Its totient is φ = 54400604400.

The previous prime is 68000755477. The next prime is 68000755573. The reversal of 68000755505 is 50555700086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16595622976 + 51405132529 = 128824^2 + 226727^2 .

It is not a de Polignac number, because 68000755505 - 2³⁴ = 50820886321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800075546 + ... + 6800075555.

It is an arithmetic number, because the mean of its divisors is an integer number (20400226653).

Almost surely, 2^68000755505 is an apocalyptic number.

It is an amenable number.

68000755505 is a deficient number, since it is larger than the sum of its proper divisors (13600151107).

68000755505 is a wasteful number, since it uses less digits than its factorization.

68000755505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600151106.

The product of its (nonzero) digits is 210000, while the sum is 41.

The spelling of 68000755505 in words is "sixty-eight billion, seven hundred fifty-five thousand, five hundred five".