68546664586 has 8 divisors (see below), whose sum is σ = 102821324580. Its totient is φ = 34272889728.

The previous prime is 68546664541. The next prime is 68546664587.

68546664586 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 68536622025 + 10042561 = 261795^2 + 3169^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68546664587) 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, 28890 + ... + 371386.

Almost surely, 2^68546664586 is an apocalyptic number.

68546664586 is a deficient number, since it is larger than the sum of its proper divisors (34274659994).

68546664586 is a wasteful number, since it uses less digits than its factorization.

68546664586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442568.

The product of its digits is 199065600, while the sum is 64.

The spelling of 68546664586 in words is "sixty-eight billion, five hundred forty-six million, six hundred sixty-four thousand, five hundred eighty-six".