1387276843680 has 2304 divisors, whose sum is σ = 6481726272000. Its totient is φ = 275528687616.

The previous prime is 1387276843643. The next prime is 1387276843721. The reversal of 1387276843680 is 863486727831.

1387276843680 is a `hidden beast` number, since 1 + 387 + 2 + 76 + 84 + 36 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 383 ways as a sum of consecutive naturals, for example, 8836158162 + ... + 8836158318.

It is an arithmetic number, because the mean of its divisors is an integer number (2813249250).

Almost surely, 2^{1387276843680} is an apocalyptic number.

1387276843680 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 1387276843680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240863136000).

1387276843680 is an abundant number, since it is smaller than the sum of its proper divisors (5094449428320).

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

1387276843680 is a wasteful number, since it uses less digits than its factorization.

1387276843680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 1387276843680 in words is "one trillion, three hundred eighty-seven billion, two hundred seventy-six million, eight hundred forty-three thousand, six hundred eighty".