68120699061 has 4 divisors (see below), whose sum is σ = 90827598752. Its totient is φ = 45413799372.

The previous prime is 68120699051. The next prime is 68120699063. The reversal of 68120699061 is 16099602186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68120699061 - 2¹¹ = 68120697013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68120699061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68120699063) 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, 11353449841 + ... + 11353449846.

It is an arithmetic number, because the mean of its divisors is an integer number (22706899688).

Almost surely, 2^68120699061 is an apocalyptic number.

It is an amenable number.

68120699061 is a deficient number, since it is larger than the sum of its proper divisors (22706899691).

68120699061 is a wasteful number, since it uses less digits than its factorization.

68120699061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22706899690.

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 68120699061 in words is "sixty-eight billion, one hundred twenty million, six hundred ninety-nine thousand, sixty-one".