1028879996648 has 80 divisors (see below), whose sum is σ = 2382926605380. Its totient is φ = 415010287104.

The previous prime is 1028879996623. The next prime is 1028879996671. The reversal of 1028879996648 is 8466999788201.

It can be written as a sum of positive squares in 2 ways, for example, as 1028605696804 + 274299844 = 1014202^2 + 16562^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1248911 + ... + 1901982.

Almost surely, 2^{1028879996648} is an apocalyptic number.

It is an amenable number.

1028879996648 is an abundant number, since it is smaller than the sum of its proper divisors (1354046608732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028879996648 is an equidigital number, since it uses as much as digits as its factorization.

1028879996648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150944 (or 3150919 counting only the distinct ones).

The product of its (nonzero) digits is 752467968, while the sum is 77.

The spelling of 1028879996648 in words is "one trillion, twenty-eight billion, eight hundred seventy-nine million, nine hundred ninety-six thousand, six hundred forty-eight".