1340867581344 has 96 divisors (see below), whose sum is σ = 4001814210240. Its totient is φ = 436561526016.

The previous prime is 1340867581343. The next prime is 1340867581399. The reversal of 1340867581344 is 4431857680431.

1340867581344 is a `hidden beast` number, since 13 + 4 + 0 + 8 + 6 + 7 + 581 + 3 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1340867581343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18008547 + ... + 18082850.

It is an arithmetic number, because the mean of its divisors is an integer number (41685564690).

Almost surely, 2^{1340867581344} is an apocalyptic number.

It is an amenable number.

1340867581344 is an abundant number, since it is smaller than the sum of its proper divisors (2660946628896).

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

1340867581344 is a wasteful number, since it uses less digits than its factorization.

1340867581344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36091459 (or 36091445 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 1340867581344 in words is "one trillion, three hundred forty billion, eight hundred sixty-seven million, five hundred eighty-one thousand, three hundred forty-four".