1381205169288 has 96 divisors (see below), whose sum is σ = 4326666926400. Its totient is φ = 389875457664.

The previous prime is 1381205169277. The next prime is 1381205169349. The reversal of 1381205169288 is 8829615021831.

1381205169288 is a `hidden beast` number, since 1 + 3 + 81 + 20 + 516 + 9 + 28 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16467123 + ... + 16550786.

It is an arithmetic number, because the mean of its divisors is an integer number (45069447150).

Almost surely, 2^{1381205169288} is an apocalyptic number.

1381205169288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1381205169288 is an abundant number, since it is smaller than the sum of its proper divisors (2945461757112).

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

1381205169288 is a wasteful number, since it uses less digits than its factorization.

1381205169288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33018011 (or 33018004 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 1381205169288 in words is "one trillion, three hundred eighty-one billion, two hundred five million, one hundred sixty-nine thousand, two hundred eighty-eight".