144354215666 has 16 divisors (see below), whose sum is σ = 217576938240. Its totient is φ = 71828860080.

The previous prime is 144354215653. The next prime is 144354215683. The reversal of 144354215666 is 666512453441.

It is a self number, because there is not a number n which added to its sum of digits gives 144354215666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939401 + ... + 1082211.

It is an arithmetic number, because the mean of its divisors is an integer number (13598558640).

Almost surely, 2^144354215666 is an apocalyptic number.

144354215666 is a deficient number, since it is larger than the sum of its proper divisors (73222722574).

144354215666 is a wasteful number, since it uses less digits than its factorization.

144354215666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145249.

The product of its digits is 2073600, while the sum is 47.

The spelling of 144354215666 in words is "one hundred forty-four billion, three hundred fifty-four million, two hundred fifteen thousand, six hundred sixty-six".