68045919571 has 8 divisors (see below), whose sum is σ = 77800003424. Its totient is φ = 58300145280.

The previous prime is 68045919521. The next prime is 68045919637. The reversal of 68045919571 is 17591954086.

It is a happy number.

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 68045919571 - 2²³ = 68037530963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68045919521) 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 7 ways as a sum of consecutive naturals, for example, 2059830 + ... + 2092603.

It is an arithmetic number, because the mean of its divisors is an integer number (9725000428).

Almost surely, 2^68045919571 is an apocalyptic number.

68045919571 is a deficient number, since it is larger than the sum of its proper divisors (9754083853).

68045919571 is a wasteful number, since it uses less digits than its factorization.

68045919571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154781.

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 68045919571 in words is "sixty-eight billion, forty-five million, nine hundred nineteen thousand, five hundred seventy-one".