146666668643 has 8 divisors (see below), whose sum is σ = 160504737840. Its totient is φ = 132912722080.

The previous prime is 146666668639. The next prime is 146666668679. The reversal of 146666668643 is 346866666641.

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 146666668643 - 2² = 146666668639 is a prime.

It is a super-2 number, since 2×146666668643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146666668613) 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, 21027008 + ... + 21033981.

It is an arithmetic number, because the mean of its divisors is an integer number (20063092230).

Almost surely, 2^146666668643 is an apocalyptic number.

146666668643 is a deficient number, since it is larger than the sum of its proper divisors (13838069197).

146666668643 is a wasteful number, since it uses less digits than its factorization.

146666668643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42061317.

The product of its digits is 107495424, while the sum is 62.

The spelling of 146666668643 in words is "one hundred forty-six billion, six hundred sixty-six million, six hundred sixty-eight thousand, six hundred forty-three".