142466166505391 has 4 divisors (see below), whose sum is σ = 143093770763352. Its totient is φ = 141838562247432.

The previous prime is 142466166505339. The next prime is 142466166505417. The reversal of 142466166505391 is 193505661664241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142466166505391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142466166505391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142466166505891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313802128640 + ... + 313802129093.

It is an arithmetic number, because the mean of its divisors is an integer number (35773442690838).

Almost surely, 2^{142466166505391} is an apocalyptic number.

142466166505391 is a deficient number, since it is larger than the sum of its proper divisors (627604257961).

142466166505391 is an equidigital number, since it uses as much as digits as its factorization.

142466166505391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627604257960.

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 142466166505391 in words is "one hundred forty-two trillion, four hundred sixty-six billion, one hundred sixty-six million, five hundred five thousand, three hundred ninety-one".