668741151283743 has 4 divisors (see below), whose sum is σ = 891654868378328. Its totient is φ = 445827434189160.

The previous prime is 668741151283739. The next prime is 668741151283823. The reversal of 668741151283743 is 347382151147866.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 668741151283743 - 2² = 668741151283739 is a prime.

It is a super-3 number, since 3×668741151283743³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668741151283703) 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, 111456858547288 + ... + 111456858547293.

It is an arithmetic number, because the mean of its divisors is an integer number (222913717094582).

Almost surely, 2^{668741151283743} is an apocalyptic number.

668741151283743 is a deficient number, since it is larger than the sum of its proper divisors (222913717094585).

668741151283743 is a wasteful number, since it uses less digits than its factorization.

668741151283743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222913717094584.

The product of its digits is 162570240, while the sum is 66.

The spelling of 668741151283743 in words is "six hundred sixty-eight trillion, seven hundred forty-one billion, one hundred fifty-one million, two hundred eighty-three thousand, seven hundred forty-three".