68049675391809 has 32 divisors (see below), whose sum is σ = 92103769073664. Its totient is φ = 44682318696960.

The previous prime is 68049675391793. The next prime is 68049675391823. The reversal of 68049675391809 is 90819357694086.

It is not a de Polignac number, because 68049675391809 - 2⁴ = 68049675391793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68049675391829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2069180364 + ... + 2069213250.

It is an arithmetic number, because the mean of its divisors is an integer number (2878242783552).

Almost surely, 2^{68049675391809} is an apocalyptic number.

It is an amenable number.

68049675391809 is a deficient number, since it is larger than the sum of its proper divisors (24054093681855).

68049675391809 is a wasteful number, since it uses less digits than its factorization.

68049675391809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42477.

The product of its (nonzero) digits is 705438720, while the sum is 75.

The spelling of 68049675391809 in words is "sixty-eight trillion, forty-nine billion, six hundred seventy-five million, three hundred ninety-one thousand, eight hundred nine".