1317000355728 has 20 divisors (see below), whose sum is σ = 3402250919088. Its totient is φ = 439000118560.

The previous prime is 1317000355711. The next prime is 1317000355729. The reversal of 1317000355728 is 8275530007131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317000355728.

It is not an unprimeable number, because it can be changed into a prime (1317000355729) 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, 13718753658 + ... + 13718753753.

Almost surely, 2^{1317000355728} is an apocalyptic number.

It is an amenable number.

1317000355728 is an abundant number, since it is smaller than the sum of its proper divisors (2085250563360).

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

1317000355728 is a wasteful number, since it uses less digits than its factorization.

1317000355728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27437507422 (or 27437507416 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 1317000355728 in words is "one trillion, three hundred seventeen billion, three hundred fifty-five thousand, seven hundred twenty-eight".