1128008390797 has 4 divisors (see below), whose sum is σ = 1138357091740. Its totient is φ = 1117659689856.

The previous prime is 1128008390753. The next prime is 1128008390849. The reversal of 1128008390797 is 7970938008211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 769990455081 + 358017935716 = 877491^2 + 598346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128008390797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128008399797) 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, 5174350308 + ... + 5174350525.

It is an arithmetic number, because the mean of its divisors is an integer number (284589272935).

Almost surely, 2^{1128008390797} is an apocalyptic number.

It is an amenable number.

1128008390797 is a deficient number, since it is larger than the sum of its proper divisors (10348700943).

1128008390797 is a wasteful number, since it uses less digits than its factorization.

1128008390797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348700942.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 1128008390797 in words is "one trillion, one hundred twenty-eight billion, eight million, three hundred ninety thousand, seven hundred ninety-seven".