1383288620544 has 320 divisors, whose sum is σ = 4124500300800. Its totient is φ = 457746702336.

The previous prime is 1383288620543. The next prime is 1383288620551. The reversal of 1383288620544 is 4450268823831.

1383288620544 is a `hidden beast` number, since 1 + 3 + 8 + 3 + 2 + 8 + 8 + 620 + 5 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383288620543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2025312427 + ... + 2025313109.

It is an arithmetic number, because the mean of its divisors is an integer number (12889063440).

Almost surely, 2^{1383288620544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383288620544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062250150400).

1383288620544 is an abundant number, since it is smaller than the sum of its proper divisors (2741211680256).

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

1383288620544 is an equidigital number, since it uses as much as digits as its factorization.

1383288620544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 1383288620544 in words is "one trillion, three hundred eighty-three billion, two hundred eighty-eight million, six hundred twenty thousand, five hundred forty-four".