1380055651440 has 160 divisors (see below), whose sum is σ = 4428487987200. Its totient is φ = 355150663680.

The previous prime is 1380055651439. The next prime is 1380055651459. The reversal of 1380055651440 is 441565500831.

It is a junction number, because it is equal to n+sod(n) for n = 1380055651392 and 1380055651401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2412616 + ... + 2929304.

It is an arithmetic number, because the mean of its divisors is an integer number (27678049920).

Almost surely, 2^{1380055651440} is an apocalyptic number.

1380055651440 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 1380055651440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214243993600).

1380055651440 is an abundant number, since it is smaller than the sum of its proper divisors (3048432335760).

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

1380055651440 is a wasteful number, since it uses less digits than its factorization.

1380055651440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517095 (or 517089 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 1380055651440 in words is "one trillion, three hundred eighty billion, fifty-five million, six hundred fifty-one thousand, four hundred forty".