1128628085779 has 8 divisors (see below), whose sum is σ = 1150073704800. Its totient is φ = 1107188050176.

The previous prime is 1128628085771. The next prime is 1128628085813. The reversal of 1128628085779 is 9775808268211.

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 1128628085779 - 2³ = 1128628085771 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 1128628085779.

It is not an unprimeable number, because it can be changed into a prime (1128628085771) 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, 986607 + ... + 1797400.

It is an arithmetic number, because the mean of its divisors is an integer number (143759213100).

Almost surely, 2^{1128628085779} is an apocalyptic number.

1128628085779 is a deficient number, since it is larger than the sum of its proper divisors (21445619021).

1128628085779 is an equidigital number, since it uses as much as digits as its factorization.

1128628085779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791709.

The product of its (nonzero) digits is 27095040, while the sum is 64.

The spelling of 1128628085779 in words is "one trillion, one hundred twenty-eight billion, six hundred twenty-eight million, eighty-five thousand, seven hundred seventy-nine".