1366257387000 has 256 divisors, whose sum is σ = 4651813670400. Its totient is φ = 331102080000.

The previous prime is 1366257386969. The next prime is 1366257387037. The reversal of 1366257387000 is 7837526631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140542140 + ... + 140551860.

It is an arithmetic number, because the mean of its divisors is an integer number (18171147150).

Almost surely, 2^{1366257387000} is an apocalyptic number.

1366257387000 is a gapful number since it is divisible by the number (10) 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 1366257387000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2325906835200).

1366257387000 is an abundant number, since it is smaller than the sum of its proper divisors (3285556283400).

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

1366257387000 is a wasteful number, since it uses less digits than its factorization.

1366257387000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14015 (or 14001 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 1366257387000 in words is "one trillion, three hundred sixty-six billion, two hundred fifty-seven million, three hundred eighty-seven thousand".