1128354936899 has 4 divisors (see below), whose sum is σ = 1128394430880. Its totient is φ = 1128315442920.

The previous prime is 1128354936859. The next prime is 1128354936983. The reversal of 1128354936899 is 9986394538211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128354936899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128354936859) 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, 19704104 + ... + 19761285.

It is an arithmetic number, because the mean of its divisors is an integer number (282098607720).

Almost surely, 2^{1128354936899} is an apocalyptic number.

1128354936899 is a deficient number, since it is larger than the sum of its proper divisors (39493981).

1128354936899 is an equidigital number, since it uses as much as digits as its factorization.

1128354936899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39493980.

The product of its digits is 100776960, while the sum is 68.

The spelling of 1128354936899 in words is "one trillion, one hundred twenty-eight billion, three hundred fifty-four million, nine hundred thirty-six thousand, eight hundred ninety-nine".