1128643444511 has 8 divisors (see below), whose sum is σ = 1231300804944. Its totient is φ = 1025994985920.

The previous prime is 1128643444477. The next prime is 1128643444541. The reversal of 1128643444511 is 1154443468211.

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

It is a cyclic number.

It is not a de Polignac number, because 1128643444511 - 2²⁶ = 1128576335647 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 (1128643444541) 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, 1958966 + ... + 2468771.

It is an arithmetic number, because the mean of its divisors is an integer number (153912600618).

Almost surely, 2^{1128643444511} is an apocalyptic number.

1128643444511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1128643444511 is a deficient number, since it is larger than the sum of its proper divisors (102657360433).

1128643444511 is a wasteful number, since it uses less digits than its factorization.

1128643444511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450921.

The product of its digits is 368640, while the sum is 44.

The spelling of 1128643444511 in words is "one trillion, one hundred twenty-eight billion, six hundred forty-three million, four hundred forty-four thousand, five hundred eleven".