2028735889568 has 24 divisors (see below), whose sum is σ = 3994124257620. Its totient is φ = 1014355125760.

The previous prime is 2028735889549. The next prime is 2028735889627. The reversal of 2028735889568 is 8659885378202.

It is a Cunningham number, because it is equal to 1424337²-1.

It can be written as a sum of positive squares in 2 ways, for example, as 1893409024144 + 135326865424 = 1376012^2 + 367868^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2492588 + ... + 3204756.

Almost surely, 2^{2028735889568} is an apocalyptic number.

It is an amenable number.

2028735889568 is a deficient number, since it is larger than the sum of its proper divisors (1965388368052).

2028735889568 is an equidigital number, since it uses as much as digits as its factorization.

2028735889568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801200 (or 801192 counting only the distinct ones).

The product of its (nonzero) digits is 464486400, while the sum is 71.

The spelling of 2028735889568 in words is "two trillion, twenty-eight billion, seven hundred thirty-five million, eight hundred eighty-nine thousand, five hundred sixty-eight".