1321403065366 has 8 divisors (see below), whose sum is σ = 1982214946584. Its totient is φ = 660664749840.

The previous prime is 1321403065361. The next prime is 1321403065369. The reversal of 1321403065366 is 6635603041231.

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

It is a super-2 number, since 2×1321403065366² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321403065361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18346495 + ... + 18418378.

It is an arithmetic number, because the mean of its divisors is an integer number (247776868323).

Almost surely, 2^{1321403065366} is an apocalyptic number.

1321403065366 is a deficient number, since it is larger than the sum of its proper divisors (660811881218).

1321403065366 is a wasteful number, since it uses less digits than its factorization.

1321403065366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36782846.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 1321403065366 in words is "one trillion, three hundred twenty-one billion, four hundred three million, sixty-five thousand, three hundred sixty-six".