144275101666 has 4 divisors (see below), whose sum is σ = 216412652502. Its totient is φ = 72137550832.

The previous prime is 144275101631. The next prime is 144275101667. The reversal of 144275101666 is 666101572441.

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

It can be written as a sum of positive squares in only one way, i.e., 79515540225 + 64759561441 = 281985^2 + 254479^2 .

It is not an unprimeable number, because it can be changed into a prime (144275101667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36068775415 + ... + 36068775418.

Almost surely, 2^144275101666 is an apocalyptic number.

144275101666 is a deficient number, since it is larger than the sum of its proper divisors (72137550836).

144275101666 is an equidigital number, since it uses as much as digits as its factorization.

144275101666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72137550835.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 144275101666 in words is "one hundred forty-four billion, two hundred seventy-five million, one hundred one thousand, six hundred sixty-six".