1366400365216 has 96 divisors (see below), whose sum is σ = 2892825653760. Its totient is φ = 634101657600.

The previous prime is 1366400365199. The next prime is 1366400365321. The reversal of 1366400365216 is 6125630046631.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2114940 + ... + 2684356.

It is an arithmetic number, because the mean of its divisors is an integer number (30133600560).

Almost surely, 2^{1366400365216} is an apocalyptic number.

1366400365216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366400365216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446412826880).

1366400365216 is an abundant number, since it is smaller than the sum of its proper divisors (1526425288544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366400365216 is a wasteful number, since it uses less digits than its factorization.

1366400365216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569558 (or 569550 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 1366400365216 in words is "one trillion, three hundred sixty-six billion, four hundred million, three hundred sixty-five thousand, two hundred sixteen".