1387590532320 has 384 divisors, whose sum is σ = 4570555102848. Its totient is φ = 353524121600.

The previous prime is 1387590532291. The next prime is 1387590532403. The reversal of 1387590532320 is 232350957831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1387590532320.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 806269060 + ... + 806270780.

It is an arithmetic number, because the mean of its divisors is an integer number (11902487247).

Almost surely, 2^{1387590532320} is an apocalyptic number.

1387590532320 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 1387590532320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2285277551424).

1387590532320 is an abundant number, since it is smaller than the sum of its proper divisors (3182964570528).

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

1387590532320 is a wasteful number, since it uses less digits than its factorization.

1387590532320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 1387590532320 in words is "one trillion, three hundred eighty-seven billion, five hundred ninety million, five hundred thirty-two thousand, three hundred twenty".