68651331571 has 8 divisors (see below), whose sum is σ = 69052935104. Its totient is φ = 68250447720.

The previous prime is 68651331493. The next prime is 68651331589. The reversal of 68651331571 is 17513315686.

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 68651331571 - 2⁹ = 68651331059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68651331071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12016 + ... + 370738.

It is an arithmetic number, because the mean of its divisors is an integer number (8631616888).

Almost surely, 2^68651331571 is an apocalyptic number.

68651331571 is a deficient number, since it is larger than the sum of its proper divisors (401603533).

68651331571 is a wasteful number, since it uses less digits than its factorization.

68651331571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359841.

The product of its digits is 453600, while the sum is 46.

The spelling of 68651331571 in words is "sixty-eight billion, six hundred fifty-one million, three hundred thirty-one thousand, five hundred seventy-one".