1321942191360 has 288 divisors, whose sum is σ = 4835555880960. Its totient is φ = 301502767104.

The previous prime is 1321942191301. The next prime is 1321942191377. The reversal of 1321942191360 is 631912491231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12392331 + ... + 12498549.

Almost surely, 2^{1321942191360} is an apocalyptic number.

1321942191360 is a gapful number since it is divisible by the number (10) 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 1321942191360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417777940480).

1321942191360 is an abundant number, since it is smaller than the sum of its proper divisors (3513613689600).

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

1321942191360 is a wasteful number, since it uses less digits than its factorization.

1321942191360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106713 (or 106699 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 1321942191360 in words is "one trillion, three hundred twenty-one billion, nine hundred forty-two million, one hundred ninety-one thousand, three hundred sixty".