1321552549382 has 8 divisors (see below), whose sum is σ = 2134815656736. Its totient is φ = 609947330472.

The previous prime is 1321552549381. The next prime is 1321552549433. The reversal of 1321552549382 is 2839452551231.

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

It is a super-2 number, since 2×1321552549382² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321552549382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321552549381) 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, 25414472078 + ... + 25414472129.

It is an arithmetic number, because the mean of its divisors is an integer number (266851957092).

Almost surely, 2^{1321552549382} is an apocalyptic number.

1321552549382 is a deficient number, since it is larger than the sum of its proper divisors (813263107354).

1321552549382 is a wasteful number, since it uses less digits than its factorization.

1321552549382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50828944222.

The product of its digits is 2592000, while the sum is 50.

The spelling of 1321552549382 in words is "one trillion, three hundred twenty-one billion, five hundred fifty-two million, five hundred forty-nine thousand, three hundred eighty-two".