1281204341999 has 8 divisors (see below), whose sum is σ = 1298205245760. Its totient is φ = 1264223016576.

The previous prime is 1281204341993. The next prime is 1281204342133. The reversal of 1281204341999 is 9991434021821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1281204341999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1281204341999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281204341993) 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, 4762814 + ... + 5024619.

It is an arithmetic number, because the mean of its divisors is an integer number (162275655720).

Almost surely, 2^{1281204341999} is an apocalyptic number.

1281204341999 is a deficient number, since it is larger than the sum of its proper divisors (17000903761).

1281204341999 is an equidigital number, since it uses as much as digits as its factorization.

1281204341999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789169.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 1281204341999 in words is "one trillion, two hundred eighty-one billion, two hundred four million, three hundred forty-one thousand, nine hundred ninety-nine".