1386659723136 has 128 divisors (see below), whose sum is σ = 3904888448160. Its totient is φ = 434483036160.

The previous prime is 1386659723107. The next prime is 1386659723143. The reversal of 1386659723136 is 6313279566831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1386659723136.

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 15 ways as a sum of consecutive naturals, for example, 5069556 + ... + 5336076.

Almost surely, 2^{1386659723136} is an apocalyptic number.

1386659723136 is a gapful number since it is divisible by the number (16) 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 1386659723136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1952444224080).

1386659723136 is an abundant number, since it is smaller than the sum of its proper divisors (2518228725024).

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

1386659723136 is a wasteful number, since it uses less digits than its factorization.

1386659723136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267352 (or 267340 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 60.

The spelling of 1386659723136 in words is "one trillion, three hundred eighty-six billion, six hundred fifty-nine million, seven hundred twenty-three thousand, one hundred thirty-six".