1028336507644 has 6 divisors (see below), whose sum is σ = 1799588888384. Its totient is φ = 514168253820.

The previous prime is 1028336507641. The next prime is 1028336507677. The reversal of 1028336507644 is 4467056338201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028336507641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128542063452 + ... + 128542063459.

Almost surely, 2^{1028336507644} is an apocalyptic number.

It is an amenable number.

1028336507644 is a deficient number, since it is larger than the sum of its proper divisors (771252380740).

1028336507644 is a wasteful number, since it uses less digits than its factorization.

1028336507644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257084126915 (or 257084126913 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 1028336507644 in words is "one trillion, twenty-eight billion, three hundred thirty-six million, five hundred seven thousand, six hundred forty-four".