1338767171440 has 40 divisors (see below), whose sum is σ = 3188551575888. Its totient is φ = 522445724160.

The previous prime is 1338767171393. The next prime is 1338767171447. The reversal of 1338767171440 is 441717678331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338767171447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204077082 + ... + 204083641.

Almost surely, 2^{1338767171440} is an apocalyptic number.

1338767171440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338767171440 is an abundant number, since it is smaller than the sum of its proper divisors (1849784404448).

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

1338767171440 is a wasteful number, since it uses less digits than its factorization.

1338767171440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408160777 (or 408160771 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 1338767171440 in words is "one trillion, three hundred thirty-eight billion, seven hundred sixty-seven million, one hundred seventy-one thousand, four hundred forty".