1384725053440 has 128 divisors (see below), whose sum is σ = 3379639950000. Its totient is φ = 544498253824.

The previous prime is 1384725053399. The next prime is 1384725053479. The reversal of 1384725053440 is 443505274831.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9594936 + ... + 9738184.

Almost surely, 2^{1384725053440} is an apocalyptic number.

1384725053440 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 1384725053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1689819975000).

1384725053440 is an abundant number, since it is smaller than the sum of its proper divisors (1994914896560).

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

1384725053440 is an frugal number, since it uses more digits than its factorization.

1384725053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143343 (or 143315 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 1384725053440 in words is "one trillion, three hundred eighty-four billion, seven hundred twenty-five million, fifty-three thousand, four hundred forty".