1028759781896 has 256 divisors, whose sum is σ = 2664566046720. Its totient is φ = 360059904000.

The previous prime is 1028759781893. The next prime is 1028759781899. The reversal of 1028759781896 is 6981879578201.

It is an interprime number because it is at equal distance from previous prime (1028759781893) and next prime (1028759781899).

It is not an unprimeable number, because it can be changed into a prime (1028759781893) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23676431 + ... + 23719841.

It is an arithmetic number, because the mean of its divisors is an integer number (10408461120).

Almost surely, 2^{1028759781896} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028759781896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332283023360).

1028759781896 is an abundant number, since it is smaller than the sum of its proper divisors (1635806264824).

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

1028759781896 is a wasteful number, since it uses less digits than its factorization.

1028759781896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43556 (or 43552 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 71.

The spelling of 1028759781896 in words is "one trillion, twenty-eight billion, seven hundred fifty-nine million, seven hundred eighty-one thousand, eight hundred ninety-six".