143666502420401 has 16 divisors (see below), whose sum is σ = 145808003066880. Its totient is φ = 141540879364560.

The previous prime is 143666502420379. The next prime is 143666502420403. The reversal of 143666502420401 is 104024205666341.

It is a cyclic number.

It is not a de Polignac number, because 143666502420401 - 2¹⁴ = 143666502404017 is a prime.

It is a super-2 number, since 2×143666502420401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143666502420403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1325979836 + ... + 1326088178.

It is an arithmetic number, because the mean of its divisors is an integer number (9113000191680).

Almost surely, 2^{143666502420401} is an apocalyptic number.

It is an amenable number.

143666502420401 is a deficient number, since it is larger than the sum of its proper divisors (2141500646479).

143666502420401 is a wasteful number, since it uses less digits than its factorization.

143666502420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181436.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 143666502420401 in words is "one hundred forty-three trillion, six hundred sixty-six billion, five hundred two million, four hundred twenty thousand, four hundred one".