68191061995 has 8 divisors (see below), whose sum is σ = 93519170784. Its totient is φ = 46759585344.

The previous prime is 68191061933. The next prime is 68191062011. The reversal of 68191061995 is 59916019186.

68191061995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68191061995 - 2⁹ = 68191061483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974157994 + ... + 974158063.

It is an arithmetic number, because the mean of its divisors is an integer number (11689896348).

Almost surely, 2^68191061995 is an apocalyptic number.

68191061995 is a deficient number, since it is larger than the sum of its proper divisors (25328108789).

68191061995 is a wasteful number, since it uses less digits than its factorization.

68191061995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948316069.

The product of its (nonzero) digits is 1049760, while the sum is 55.

The spelling of 68191061995 in words is "sixty-eight billion, one hundred ninety-one million, sixty-one thousand, nine hundred ninety-five".