71668381358 has 8 divisors (see below), whose sum is σ = 122860082352. Its totient is φ = 30715020576.

The previous prime is 71668381357. The next prime is 71668381361. The reversal of 71668381358 is 85318386617.

71668381358 is nontrivially palindromic in base 3.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71668381357) 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, 2559585035 + ... + 2559585062.

It is an arithmetic number, because the mean of its divisors is an integer number (15357510294).

Almost surely, 2^71668381358 is an apocalyptic number.

71668381358 is a deficient number, since it is larger than the sum of its proper divisors (51191700994).

71668381358 is a wasteful number, since it uses less digits than its factorization.

71668381358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119170106.

The product of its digits is 5806080, while the sum is 56.

The spelling of 71668381358 in words is "seventy-one billion, six hundred sixty-eight million, three hundred eighty-one thousand, three hundred fifty-eight".