1380004365621 has 8 divisors (see below), whose sum is σ = 2102863795264. Its totient is φ = 788573923200.

The previous prime is 1380004365617. The next prime is 1380004365637. The reversal of 1380004365621 is 1265634000831.

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

It is not a de Polignac number, because 1380004365621 - 2² = 1380004365617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380004365621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380004365671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32857246780 + ... + 32857246821.

It is an arithmetic number, because the mean of its divisors is an integer number (262857974408).

Almost surely, 2^{1380004365621} is an apocalyptic number.

It is an amenable number.

1380004365621 is a deficient number, since it is larger than the sum of its proper divisors (722859429643).

1380004365621 is an equidigital number, since it uses as much as digits as its factorization.

1380004365621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65714493611.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1380004365621 in words is "one trillion, three hundred eighty billion, four million, three hundred sixty-five thousand, six hundred twenty-one".