1045004021688 has 128 divisors (see below), whose sum is σ = 2928353783040. Its totient is φ = 308009856000.

The previous prime is 1045004021641. The next prime is 1045004021693. The reversal of 1045004021688 is 8861204005401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3436906 + ... + 3728582.

It is an arithmetic number, because the mean of its divisors is an integer number (22877763930).

Almost surely, 2^{1045004021688} 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 1045004021688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464176891520).

1045004021688 is an abundant number, since it is smaller than the sum of its proper divisors (1883349761352).

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

1045004021688 is a wasteful number, since it uses less digits than its factorization.

1045004021688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292069 (or 292065 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 1045004021688 in words is "one trillion, forty-five billion, four million, twenty-one thousand, six hundred eighty-eight".