1401866363329 has 2 divisors, whose sum is σ = 1401866363330. Its totient is φ = 1401866363328.

The previous prime is 1401866363323. The next prime is 1401866363333. The reversal of 1401866363329 is 9233636681041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1385853991729 + 16012371600 = 1177223^2 + 126540^2 .

It is an emirp because it is prime and its reverse (9233636681041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401866363329 - 2⁵ = 1401866363297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401866363323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700933181664 + 700933181665.

It is an arithmetic number, because the mean of its divisors is an integer number (700933181665).

Almost surely, 2^{1401866363329} is an apocalyptic number.

It is an amenable number.

1401866363329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401866363329 is an equidigital number, since it uses as much as digits as its factorization.

1401866363329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 1401866363329 in words is "one trillion, four hundred one billion, eight hundred sixty-six million, three hundred sixty-three thousand, three hundred twenty-nine".