1401144521866 has 8 divisors (see below), whose sum is σ = 2110737027204. Its totient is φ = 697565512800.

The previous prime is 1401144521827. The next prime is 1401144521867. The reversal of 1401144521866 is 6681254411041.

It can be written as a sum of positive squares in 2 ways, for example, as 1367391116025 + 33753405841 = 1169355^2 + 183721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1401144521867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503373485 + ... + 1503374416.

Almost surely, 2^{1401144521866} is an apocalyptic number.

1401144521866 is a deficient number, since it is larger than the sum of its proper divisors (709592505338).

1401144521866 is a wasteful number, since it uses less digits than its factorization.

1401144521866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006748136.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 1401144521866 in words is "one trillion, four hundred one billion, one hundred forty-four million, five hundred twenty-one thousand, eight hundred sixty-six".