1340476780668 has 12 divisors (see below), whose sum is σ = 3127779154920. Its totient is φ = 446825593552.

The previous prime is 1340476780667. The next prime is 1340476780739. The reversal of 1340476780668 is 8660876740431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340476780667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55853199183 + ... + 55853199206.

It is an arithmetic number, because the mean of its divisors is an integer number (260648262910).

Almost surely, 2^{1340476780668} is an apocalyptic number.

It is an amenable number.

1340476780668 is an abundant number, since it is smaller than the sum of its proper divisors (1787302374252).

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

1340476780668 is a wasteful number, since it uses less digits than its factorization.

1340476780668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111706398396 (or 111706398394 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 1340476780668 in words is "one trillion, three hundred forty billion, four hundred seventy-six million, seven hundred eighty thousand, six hundred sixty-eight".