1366018037321 has 6 divisors (see below), whose sum is σ = 1589041390410. Its totient is φ = 1170872603376.

The previous prime is 1366018037309. The next prime is 1366018037353. The reversal of 1366018037321 is 1237308106631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1362031377721 + 3986659600 = 1167061^2 + 63140^2 .

It is not a de Polignac number, because 1366018037321 - 2¹⁴ = 1366018020937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366018027321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13938959516 + ... + 13938959613.

It is an arithmetic number, because the mean of its divisors is an integer number (264840231735).

Almost surely, 2^{1366018037321} is an apocalyptic number.

It is an amenable number.

1366018037321 is a deficient number, since it is larger than the sum of its proper divisors (223023353089).

1366018037321 is an equidigital number, since it uses as much as digits as its factorization.

1366018037321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27877919143 (or 27877919136 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 1366018037321 in words is "one trillion, three hundred sixty-six billion, eighteen million, thirty-seven thousand, three hundred twenty-one".